Annex 1: Bibliography

Bibliography

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Annex 2: Model Water Safety Plan

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Bac

kflo

w

prev

ente

rs

func

tion

corr

ectly

and

w

ater

qua

lity

man

agem

ent

plan

dev

elop

ed

and

follo

wed

Bac

kflo

w

prev

ente

r ab

sent

/faul

ty

Abse

nce

of a

w

ater

qua

lity

man

agem

ent

plan

San

itary

in

spec

tion

of

back

flow

pr

even

ters

Wee

kly/

mon

thly

Ope

ratio

ns

staf

f U

tility

to

prov

ide

advi

ce t

o in

stitu

tion

on

wat

er q

ualit

y m

anag

emen

t pl

an.

Rep

air

to

back

flow

pr

even

ters

E.co

li

Faec

al

stre

ptoc

occi

.

Bac

terio

phag

e

Clos

trid

ia

perfrin

gens

San

itary

insp

ectio

n

Rec

ord

audi

t

Con

tam

inat

ion

resu

lts fr

om

cros

s-co

nnec

tions

to

sew

er s

yste

m

Leak

ing

sew

er li

e to

clo

se t

o m

ains

an

d al

low

s pa

thog

ens

to

dire

ctly

ent

er t

he

supp

ly

Like

ly/

Cat

astr

ophi

c

(dep

ends

on

loca

tion

and

popu

latio

n se

rved

)

Goo

d de

sign

an

d se

wer

an

d m

ains

le

akag

e co

ntro

l pr

ogra

mm

es

Sys

tem

s de

sign

ed t

o pr

even

t cr

oss-

conn

ectio

n un

der

all

circ

umst

ance

Sud

den

chlo

rine

loss

, ris

k as

sess

men

t in

dica

tes

elev

ated

ris

k

Chl

orin

e re

sidu

al,

tu

rbid

ity,

sani

tary

in

spec

tion/

risk

mod

el

Mon

thly

O

pera

tions

(b

oth

wat

er

and

sew

erag

e

Leak

s in

wat

er

supp

ly a

nd s

ewer

sh

ould

be

repa

ired

rapi

dly;

re

habi

litat

ion

to

impr

ove

hydr

osta

tic

pres

sure

; cut

-off

wal

ls in

hig

h-ris

k ar

eas

E.co

li

Faec

al

stre

ptoc

occi

.

Bac

terio

phag

e

San

itary

insp

ectio

n

Rec

ord

audi

t

Bac

k-si

phon

age

of c

onta

min

ated

w

ater

Leak

s in

pip

e co

mbi

ned

with

dr

ops

in p

ress

ure

(eith

er

inte

rmitt

ence

or

tran

sien

t pr

essu

re w

aves

) al

low

ingr

ess

of

wat

er c

onta

inin

g pa

thog

ens

from

fa

ecal

ly-

cont

amin

ated

so

ils

Like

ly/

Mod

erat

e

(dep

ends

on

loca

tion

and

popu

latio

n se

rved

)

Red

uce

inte

rmitt

ence

an

d lim

it po

tent

ial f

or

tran

sien

t pr

essu

re

wav

es b

y lim

iting

dire

ct

conn

ectio

ns

on p

umpi

ng

mai

ns

Pipe

d w

ater

su

pply

with

le

akag

e co

ntro

l pr

ogra

mm

e an

d po

sitiv

e hy

dros

tatic

pr

essu

re

Cut-

off w

alls

Lim

ited

wat

er

ham

mer

Sud

den

loss

of

chlo

rine,

in

crea

se in

tu

rbid

ity, r

isk

asse

ssm

ent

indi

cate

s hi

gh

risk

Chl

orin

e re

sidu

als,

tu

rbid

ity,

sani

tary

in

spec

tion/

risk

mod

el

Dai

ly

Ope

ratio

ns

staf

f R

educ

e in

term

itten

ce.

Leak

age

cont

rol

prog

ram

me.

W

here

in

term

itten

ce

unav

oida

ble,

di

sinf

ectio

n st

rate

gy

deve

lope

d. C

ut-

off w

alls

co

nstr

ucte

d in

hi

gh r

isk

area

s

Red

uce

tran

sien

t pr

essu

re w

aves

E.co

li

Faec

al

stre

ptoc

occi

.

Bac

terio

phag

e

San

itary

insp

ectio

n

Rec

ord

audi

t

Con

tam

inat

ion

intr

oduc

ed

durin

g re

pairs

on

dist

ribut

ion

syst

em

Poor

hyg

iene

in

repa

ir w

ork

allo

ws

cont

amin

atio

n to

en

ter

into

the

sy

stem

Mod

erat

e/

Cat

astr

ophi

c

Hyg

ieni

c co

des

of

prac

tice

for

wor

k on

di

strib

utio

n m

ains

Hyg

iene

cod

e de

velo

ped,

av

aila

ble

to a

ll st

aff a

nd

follo

wed

Evid

ence

tha

t hy

gien

e co

de

not

follo

wed

Turb

idity

Chl

orin

e re

sidu

als

Site

insp

ectio

n

Dai

ly

Man

agem

ent/

oper

atio

ns

Ensu

re t

hat

hygi

ene

code

is

prep

ared

and

m

ade

avai

labl

e to

all

staf

f. Tr

aini

ng in

goo

d hy

gien

e fo

r m

ains

rep

air

team

s.

E.co

li

Faec

al

stre

ptoc

occi

.

Bac

terio

phag

e

Hyg

iene

insp

ectio

n

Rec

ord

audi

t

Bio

film

slo

ughi

ng

into

drin

king

w

ater

Bio

film

dev

elop

s be

caus

e of

hig

h AO

C c

onte

nt a

nd

lack

of c

ontr

ol

stra

tegy

. H

ydra

ulic

ch

ange

s (s

urge

s/w

ater

ha

mm

er)

lead

to

slou

ghin

g

Mod

erat

e/

min

or

Min

imis

e bi

ofilm

fo

rmat

ion

(chl

orin

atio

n or

use

bi

olog

ical

ly

stab

le w

ater

)

Litt

le b

iofil

m

deve

lope

d an

d lim

ited

risk

of

slou

ghin

g

Incr

ease

s in

tu

rbid

ity,

chlo

rine

loss

, ch

ange

s in

co

lour

Chl

orin

e re

sidu

al,

colo

ur,

turb

idity

, od

our,

cu

stom

er

com

plai

nts,

co

rros

ion

coup

ons

Dai

ly

Ope

ratio

ns

Rep

lace

men

t of

hi

gh a

dher

ence

pi

pe m

ater

ial,

impr

ove

biol

ogic

al s

tabi

lity

thro

ugh

optim

ised

tr

eatm

ent,

im

prov

e st

eady

st

ate

flow

Aero

mon

as

San

itary

insp

ectio

n

Rec

ord

audi

t

Annex 3:Roles and responsibilities within the WSP framework

Act

ivit

y/re

spon

sibi

lity

mat

rix

for

wat

er

qual

ity

man

age

me

nt o

f ur

ban

wat

er

serv

ice

s us

ing

risk

man

age

me

nt m

eth

ods

– pu

blic

man

aged

uti

lity

Ac

tivi

ty

Res

pons

ibili

ty

Uti

lity

Wat

er Q

ualit

y D

ept

U

tilit

y O

pera

tion

s D

ept

Uti

lity

GIS

/Map

ping

Uni

t

Wat

er P

rodu

ctio

n/

Trea

tmen

t D

ept

Pla

nnin

g/P

roje

ct D

ept

1. E

stab

lish

Uti

lity

WS

P T

eam

W

ater

Qua

lity

Dep

artm

ent

to b

e th

e le

ad d

epar

tmen

t

Part

icip

ate

in W

SP

Team

Pa

rtic

ipat

e in

WS

P Te

am

Part

icip

ate

in W

SP

Team

2. V

erif

y S

yste

m F

low

Dia

gram

Mai

ntai

n up

date

d e

lect

roni

c m

aps

of t

reat

men

t sy

stem

Co

ordi

nate

exe

rcis

e

U

pdat

e th

e flo

w

char

t di

agra

ms

of

trea

tmen

t pr

oces

ses

Prov

ide

upda

ted

info

rmat

ion

on

wat

er

trea

tmen

t sy

stem

s

Mai

ntai

n up

date

d el

ectr

onic

map

s of

w

ater

tra

nsm

issi

on a

nd s

uppl

y ne

twor

k sh

owin

g re

leva

nt v

aria

bles

.

Coor

dina

te e

xerc

ise

Prov

ide

data

on

exis

ting

syst

em a

bout

pi

pe s

izes

, m

ater

ials

, len

gths

, de

pths

and

age

.

Upd

ate

elec

tron

ic

and

hard

cop

y m

aps

of r

etic

ulat

ion

diag

ram

s

Pr

ovid

e da

ta o

n ne

w

proj

ects

Upd

ate

conf

igur

atio

n of

sup

ply

pres

sure

zon

es

Coor

dina

te e

xerc

ise

Carr

y ou

t pr

essu

re t

ests

an

d up

date

zon

ing

Upd

ate

conf

igur

atio

n of

su

pply

pre

ssur

e zo

nes

Upd

ate

elec

tron

ic &

ha

rd c

opy

map

s U

pdat

e tr

eatm

ent

plan

t ou

tlet

pres

sure

s

Acti

vity

Res

pons

ibili

ty

Wat

er U

tilit

y W

SP

Te

am

Min

istr

y i/c

of

wat

er

affa

irs

Nat

iona

l Bur

eau

of

Sta

tist

ics

M

unic

ipal

Pub

lic

Hea

lth

Dep

t N

GO

s/ C

BO

s

3.

Haz

ard

Fact

ors

Soc

io-e

cono

mic

dat

a co

llect

ion

C

ompi

le g

ener

ic s

ocio

-ec

onom

ic d

ata

and

up

date

dat

a on

wat

er

serv

ices

usa

ge &

acc

ess

Prov

ide

supp

lem

enta

ry

data

Av

ail b

asic

dat

a on

po

p. d

ensi

ty &

so

cio-

econ

. sta

tus

Prov

ide

supp

lem

enta

ry

data

Pr

ovid

e su

pple

men

tary

da

ta

Mai

ntai

n in

vent

ory

of s

anita

tion

serv

ices

G

IS U

nit

to p

lot

prox

imity

of

sew

ers

to w

ater

pip

es

Prov

ide

Inve

ntor

y of

on

-site

san

itatio

n Pr

ovid

e su

pple

men

tary

da

ta

Mai

ntai

n in

vent

ory

of o

ther

sou

rces

of

faec

al m

atte

r Id

entif

y an

imal

hu

sban

dry,

et

c th

roug

h in

spec

tion

and

WQ

m

onito

ring

Prov

ide

nece

ssar

y in

form

atio

n

Upd

ate

data

on

low

-lyin

g ar

eas

G

eogr

aphi

cal d

ata

and

syst

em in

spec

tion,

upda

te d

ata

on lo

w-ly

ing

area

s

Prov

ide

requ

ired

geog

raph

ical

dat

a

Anal

ysis

of o

btai

ned

data

to

es

tabl

ish

patt

erns

of h

azar

ds

Util

ity W

SP

team

to

anal

yse

data

Acti

vity

Res

pons

ibili

ty

Uti

lity

WQ

D

epar

tmen

t

Wat

er U

tilit

y O

pera

tion

s D

epar

tmen

t W

ater

Uti

lity

Pro

duct

ion

Dep

t

4. V

ulne

rabi

lity

Fact

ors

Upd

ate

stat

e of

res

ervo

irs

Car

ry o

ut s

anita

ry

insp

ectio

ns

Upd

ate

data

on

othe

r vu

lner

abili

ty

varia

bles

An

alys

e ex

istin

g

data

on

WQ

pr

oble

ms

Keep

and

upd

ate

date

on

pipe

le

akag

es, b

urst

s, a

reas

with

‘s

pagh

etti’

& c

ross

- co

nnec

tions

, an

d di

scon

tinui

ty p

atte

rns.

Hyd

raul

ic m

odel

ling

of d

ispe

rsio

n pa

tter

ns o

f con

tam

inan

ts

Des

ign

and

field

-tes

t hy

drau

lic m

odel

& p

ass

data

to

Map

ping

Uni

t S

uppl

y da

ta o

n flu

ctua

tion

of o

utle

t pr

essu

res

Acti

vity

Res

pons

ibili

ty

Wat

er U

tilit

y W

Q D

ept

Wat

er U

tilit

y O

pera

tion

s D

epar

tmen

t

Wat

er U

tilit

y M

appi

ng

Uni

t

5. S

yste

m A

sses

smen

t

Lead

sys

tem

ass

essm

ent

Pa

rtic

ipat

e in

sys

tem

as

sess

men

t

Part

icip

ate

in s

yste

m

asse

ssm

ent

Pl

an fo

r sy

stem

ass

essm

ents

WS

P te

am t

o ac

quire

logi

stic

s fo

r th

e fie

ld t

rips

e.g.

equ

ipm

ent,

tra

nspo

rt &

allo

wan

ces

Dev

elop

san

itary

insp

ectio

n fo

rms

WS

P te

am t

o dr

aft

sani

tary

insp

ectio

n fo

rms

for

vario

us

inst

alla

tions

Car

ry o

ut s

anita

ry in

spec

tion

of

insp

ectio

n po

ints

and

val

idat

e th

e fo

rms

Usi

ng r

elev

ant

sani

tary

insp

ectio

n fo

rms,

WS

P te

am

to

carr

y ou

t sy

stem

ass

essm

ent

at v

ario

us

insp

ectio

n po

ints

suc

h as

slu

ice

valv

es, p

ublic

sta

ndpi

pes,

re

serv

oirs

, hou

se c

onne

ctio

ns.

Team

to

upd

ate

sani

tary

insp

ectio

n fo

rms

basi

ng o

n fie

ld fi

ndin

gs

Car

ry o

ut p

hysi

co-c

hem

ical

tes

ts a

t in

spec

tion

poin

ts

WS

P te

am

to c

arry

out

phy

sico

-che

mic

al

test

s of

co

lour

, tur

bidi

ty,

pH, t

empe

ratu

re, a

nd r

esid

ual c

hlor

ine

Rec

ord

GPS

co-

ordi

nate

s of

in

spec

tion

poi

nts

and

prod

uce

map

s W

SP

team

to

reco

rd G

PS c

o-or

dina

tes

of s

ugge

sted

co

ntro

l poi

nts

Prod

uce

elec

tron

ic m

aps

Acti

vity

W

ater

Uti

lity

WQ

D

ept

Wat

er U

tilit

y O

pera

tion

s D

tt

Wat

er U

tilit

y M

appi

ng U

nit

Res

pons

ibili

ty

Dep

artm

ent

6. P

rodu

ce r

isk

map

s

Haz

ard

Anal

ysis

W

SP

team

to

carr

y ou

t ha

zard

ana

lysi

s us

ing

all d

ata

obta

ined

in A

ctiv

ity 3

Vuln

erab

ility

Ana

lysi

s W

SP

team

to

carr

y ou

t ha

zard

ana

lysi

s us

ing

all d

ata

obta

ined

in A

ctiv

ities

2 &

4

Ris

k m

appi

ng

WS

P te

am t

o dr

aw a

ris

k m

ap o

n ba

sis

of

data

obt

aine

d in

Act

iviti

es 6

a an

d 6b

. Pr

oduc

e ris

k m

ap in

el

ectr

onic

ver

sion

7. F

ield

Val

idat

ion

of R

isk

Map

s

Zoni

ng o

f the

dis

trib

utio

n sy

stem

WS

P te

am t

o zo

ne t

he s

yste

m a

ccor

ding

to

geo

grap

hica

l loc

atio

ns, s

ize

of z

one

depe

ndin

g on

sin

gle-

day

wor

kloa

d

Carr

y ou

t fie

ldw

ork

Set

up

seve

ral i

nspe

ctio

n te

ams

Car

ry o

ut s

anita

ry s

urve

y to

ver

ify r

isk

map

s

Valid

ate

risk

map

U

se o

btai

ned

dat

a to

ref

ine

or c

ompl

ete

risk

map

U

pdat

e el

ectr

onic

an

d ha

rdco

py m

aps

acco

rdin

gly

Acti

vity

W

ater

Uti

lity

WQ

D

ept

Wat

er U

tilit

y O

pera

tion

s D

tt

Wat

er U

tilit

y P

rodu

ctio

n D

tt

Uti

lity

Top

Man

agem

ent

Exte

rnal

C

onsu

ltan

ts

Res

pons

ibili

ty

Dep

artm

ent

Dep

artm

ent

8. D

evel

op a

com

preh

ensi

ve W

ater

Saf

ety

Pla

n (W

SP

)

Def

ine

Con

trol

Mea

sure

s W

SP

team

mem

bers

sho

uld

defin

e su

itabl

e ac

tions

req

uire

d to

lim

it ris

ks fo

r lik

ely

haza

rds.

Def

ine

criti

cal l

imits

W

SP

team

mem

bers

to

defin

e cr

itica

l lim

its t

hat

defin

e pe

rform

ance

env

elop

es fo

r th

e co

ntro

l mea

sure

s

Def

ine

mon

itorin

g fo

r ea

ch c

ontr

ol m

easu

re

WS

P te

am m

embe

rs t

o de

fine

sim

ple

mon

itorin

g va

riabl

es

for

each

con

trol

mea

sure

, to

be d

one

on a

reg

ular

bas

is

Def

ine

corr

ectiv

e ac

tions

for

each

con

trol

mea

sure

W

SP

team

to

defin

e ac

tions

(sh

ort-

and

long

-ter

m)

to b

e ta

ken

in t

he e

vent

of a

failu

re in

the

con

trol

mea

sure

s

Esta

blis

h ve

rific

atio

n sy

stem

s W

SP

team

to

defin

e a

verif

icat

ion

syst

em t

o ch

eck

the

perfo

rman

ce o

f the

con

trol

mea

sure

s, a

nd a

dequ

acy

of t

he

mon

itorin

g sy

stem

. Ver

ifica

tion

to in

clud

e m

ore

qual

ity

varia

bles

, but

to

be d

one

less

reg

ular

ly.

Prov

ide

for

stru

ctur

es, p

roce

dure

s an

d eq

uipm

ent

for

WS

Ps

WS

P te

am t

o de

sign

sui

tabl

e st

ruct

ures

and

pro

cedu

res

for

impl

emen

ting

WS

P.

WS

P te

am t

o pr

omot

e id

ea t

o To

p M

anag

emen

t, b

uy

nece

ssar

y eq

uipm

ent

and

impl

emen

t W

SP

Des

ign

WQ

Info

rmat

ion

Man

agem

ent

Sys

tem

s W

SP

team

to

desi

gn W

Q IM

S t

o cu

t ac

ross

rel

evan

t de

part

men

ts

Top

Man

agem

ent

to

prov

ide

for

WQ

MIS

Cap

acity

bui

ldin

g fo

r W

SPs

W

SP

team

to

draw

cap

acity

bui

ldin

g re

quire

men

ts a

nd

need

s to

ena

ble

WS

Ps t

o be

car

ried

out

at lo

wer

leve

ls

Top

Man

agem

ent

to

prov

ide

for

capa

city

bu

ildin

g

Con

sulta

nts

to

carr

y ou

t ca

paci

ty

build

ing

Eval

uate

and

rev

iew

WS

P W

SP

team

to

eval

uate

and

rev

iew

WS

P pe

riodi

cally

Acti

vity

Wat

er U

tilit

y W

Q

Dep

t W

ater

Uti

lity

Ope

rati

ons

Dep

artm

ent

Wat

er U

tilit

y P

rodu

ctio

n D

epar

tmen

t

Res

pons

ibili

ty

9. W

Q A

sses

smen

t

Car

ry o

ut fi

eld

sam

plin

g at

th

e in

spec

tion

poin

ts u

sing

sel

ecte

d m

icro

bes

as p

aram

eter

s

WQ

and

Ope

ratio

ns s

taff

to c

arry

out

the

fiel

d w

ork

Car

ry o

ut la

bora

tory

ana

lysi

s of

the

col

lect

ed s

ampl

es

Sam

ples

to

be

anal

ysed

at

the

Util

ity

Lab

Rev

iew

and

rev

ise

WS

P on

bas

is o

f WQ

ass

essm

ent

resu

lts

Rev

iew

con

trol

mea

sure

s, c

orre

ctiv

e ac

tions

an

d m

onito

ring

stra

tegi

es

Rev

ise

WS

P ac

cord

ingl

y

Acti

vity

Wat

er U

tilit

y W

SP

Tea

m

Wat

er U

tilit

y To

p M

anag

emen

t C

omm

unit

y Le

ader

s/C

omm

unit

y gr

oups

Com

mun

ity

mem

bers

In

term

edia

ry

NG

O/C

BO

C

omm

unit

y W

SP

m

embe

rs

Res

pons

ibili

ty

10. P

roce

ss o

f in

volv

ing

low

-inco

me

com

mun

itie

s in

WS

Ps

Sel

ect

com

mun

ities

an

d co

mm

unity

gr

oups

will

ing

to p

artic

ipat

e in

pilo

ting

com

mun

ity

WSP

s

WS

P Te

am t

o co

ntra

ct

suita

ble

inte

rmed

iary

C

BO

/NG

O w

orki

ng w

ith

low

-inco

me

com

mun

ities

Util

ity t

o su

ppor

t

cont

ract

ual

oblig

atio

ns

Com

mun

ity le

ader

s an

d gr

oups

to

be

cons

ulte

d

C

ontr

acte

d in

term

edia

ry g

roup

to

draw

crit

eria

for

part

icip

atio

n an

d se

lect

com

mun

ities

for

pilo

t st

udy

Prom

otio

n of

WS

Ps

and

initi

al

disc

ussi

on s

essi

ons

with

par

ticip

atin

g co

mm

uniti

es a

nd c

omm

unity

gro

ups

WS

P Te

am t

o pr

ovid

e si

mpl

ified

tec

hnic

al

guid

ance

in d

iscu

ssio

ns

Util

ity t

o su

ppor

t fie

ld o

pera

tions

Co

mm

unity

lead

ers

and

grou

ps t

o m

obili

se r

esid

ents

for,

&

att

end

dis

cuss

ion

sess

ions

Com

mun

ity

mem

bers

to

part

icip

ate

in

initi

al d

iscu

ssio

n m

eetin

gs

Inte

rmed

iary

gro

up t

o ac

t as

faci

litat

ors

of

disc

ussi

on s

essi

ons

Dis

cuss

and

agr

ee o

n sh

arin

g of

rol

es

and

task

s by

com

mun

ity g

roup

s an

d ut

ility

for

com

mun

ity b

ased

WS

Ps

WS

P Te

am t

o le

ad t

he

disc

ussi

ons

&

prov

ide

sim

plifi

ed t

echn

ical

gu

idan

ce

Util

ity t

o su

ppor

t fie

ld o

pera

tions

Co

mm

unity

lead

ers

&

grou

ps

to p

artic

ipat

e in

dis

cuss

ions

In

term

edia

ry g

roup

to

act

as fa

cilit

ator

s of

di

scus

sion

ses

sion

s

Cap

acity

bui

ldin

g fo

r co

mm

unity

WS

P Te

am

In c

onsu

ltatio

n w

ith

inte

rmed

iary

gro

up, W

SP

Team

to

draw

up

requ

irem

ents

for

build

ing

capa

city

of s

elec

ted

mem

bers

of c

omm

unity

Util

ity t

o su

ppor

t ca

paci

ty b

uild

ing

budg

et

Com

mun

ity le

ader

s an

d gr

oups

to

assi

st in

se

lect

ion

proc

ess

of

suita

ble

mem

bers

of

com

mun

ity

In

term

edia

ry g

roup

to

draw

bud

get,

co

ntrib

ute

to n

eeds

as

sess

men

t, a

nd c

arry

ou

t ca

paci

ty b

uild

ing

Com

mun

ity W

SP

mem

bers

to

atte

nd

and

part

icip

ate

in

capa

city

bui

ldin

g pr

ogra

mm

es

Pilo

t an

d re

view

com

mun

ity W

SPs

W

SP

Team

to

pilo

t &

re

view

com

mun

ity W

SP

in

cons

ulta

tion

with

in

term

edia

ry g

roup

Util

ity t

o su

ppor

t co

mm

unity

W

SP

task

s

Com

mun

ity g

roup

s an

d le

ader

s to

pa

rtic

ipat

e in

rev

iew

pr

oces

s

Com

mun

ity

mem

bers

to

part

icip

ate

in

revi

ew p

roce

ss

Inte

rmed

iary

gro

up

to

part

icip

ate

in p

ilot

and

revi

ew p

roce

ss

Com

mun

ity W

SP

mem

bers

to

activ

ely

part

icip

ate

Expa

nd c

omm

unity

WS

Ps t

o ot

her

area

s W

SP

Team

to

lead

in

proc

ess

of e

stab

lishm

ent

of c

omm

unity

WS

P m

embe

rs

Util

ity t

o su

ppor

t co

mm

unity

W

SP

task

s

Com

mun

ity le

ader

s &

gr

oups

to

sele

ct

com

mun

ity W

SP

mem

bers

Com

mun

ity

mem

bers

to

part

icip

ate

in

revi

ew p

roce

ss

Inte

rmed

iary

gro

up t

o ad

vise

whi

ch o

ther

ar

eas

to e

xpan

d

Com

mun

ity W

SP

mem

bers

to

activ

ely

part

icip

ate

Acti

vity

Min

istr

y of

W

ater

M

inis

try

of H

ealt

h In

depe

nden

t R

egul

ator

W

ater

Uti

lity

Bur

eau

of

Sta

ndar

ds

Com

mun

itie

s In

depe

nden

t C

onsu

ltan

ts

Gov

ernm

ent

Che

mis

t

Res

pons

ibili

ty

11. E

stab

lish

WQ

Reg

ulat

ory

Sys

tem

s

Legi

slat

e fo

r W

Q R

egul

ator

y Fr

amew

ork

Wor

k w

ith

rele

vant

go

vern

men

t de

part

men

ts t

o ha

ve a

lega

l fra

mew

ork

stre

ngth

ened

Part

icip

ate

in

legi

slat

ion

proc

esse

s Pa

rtic

ipat

e in

le

gisl

atio

n pr

oces

ses

Part

icip

ate

in

legi

slat

ion

proc

esse

s

Feed

into

the

le

gisl

ativ

e pr

oces

s

Rev

iew

and

rev

ise

Publ

ic

Hea

lth W

Q t

arge

ts

Part

icip

ate

in

the

revi

ew a

nd

revi

sion

pr

oces

s

Take

lead

ing

role

in

the

revi

ew a

nd

revi

sion

pro

cess

Part

icip

ate

in t

he

revi

ew a

nd

revi

sion

pro

cess

Part

icip

ate

in

the

revi

ew a

nd

revi

sion

pro

cess

In c

onsu

ltatio

n w

ith o

ther

st

akeh

olde

rs,

esta

blis

h N

atio

nal

Drin

king

Wat

er

Qua

lity

Sta

ndar

ds

Feed

into

the

re

view

and

re

visi

on

proc

ess

Pa

rtic

ipat

e in

th

e re

view

and

re

visi

on

proc

ess

Appo

int

Inde

pend

ent

WQ

Au

dito

rs t

hrou

gh o

pen

tend

erin

g

Part

icip

ate

in

proc

ess

of

appo

intin

g au

dito

rs

Appo

int

Chi

ef W

Q

Insp

ecto

r, w

ho le

ads

the

proc

ess

of

recr

uitin

g Au

dito

rs

Part

icip

ate

in

proc

ess

of

appo

intin

g au

dito

rs a

nd fu

nd

audi

t op

erat

ions

Co

mpe

titiv

e bi

ddin

g Pa

rtic

ipat

e in

pr

oces

s of

ap

poin

ting

audi

tors

Reg

ular

insp

ectio

n of

util

ity

labs

and

oth

er fa

cilit

ies

Pr

ovid

e m

anpo

wer

su

ppor

t fo

r in

spec

tion

Rec

eive

rep

orts

Av

ail f

acili

ties

for

insp

ectio

n

C

arry

out

in

spec

tion

Reg

ular

rev

iew

of W

SPs

Prov

ide

man

pow

er

supp

ort

for

insp

ectio

n

Rec

eive

rep

orts

Pr

esen

t W

SPs

Part

icip

ate

in

revi

ew p

roce

ss

Lead

rol

e in

re

view

pro

cess

Str

engt

hen

the

nat

iona

l sy

stem

da

taba

se

Prov

ide

hist

oric

al d

ata

Prov

ide

hist

oric

al

data

& p

artic

ipat

e in

pr

oces

s

Rec

eive

WQ

m

anag

emen

t in

form

atio

n

Prov

ide

WQ

m

onito

ring

&

surv

eilla

nce

data

Rec

eive

, an

alys

e an

d pr

oces

s da

ta

Reg

ular

sys

tem

Au

dits

Prov

ide

man

pow

er

supp

ort

for

audi

ts

Rec

eive

rep

orts

an

d se

nd o

ut fe

ed

back

Rec

eive

fe

edba

ck

R

ecei

ve

feed

back

C

arry

out

aud

its

Car

ry o

ut in

depe

nden

t sa

mpl

e an

alys

is

Act

ivit

y/re

spon

sibi

lity

mat

rix

for

wat

er

qual

ity

man

age

me

nt o

f ur

ban

wat

er

serv

ice

s –

unde

r ka

map

ala

man

agem

ent

cont

ract

Acti

vity

Res

pons

ibili

ty

Wat

er U

tilit

y (N

WS

C)

Pri

vate

O

pera

tor

Min

istr

y of

H

ealt

h M

inis

try

of

Wat

er

Nat

iona

l B

urea

u of

S

tati

stic

s

Mun

icip

al

Pub

lic

Hea

lth

Dep

t

NG

Os/

CB

Os

1. E

stab

lish

Util

ity W

SP

Team

W

ater

Qua

lity

Dep

artm

ent

to b

e th

e le

ad d

epar

tmen

t O

pera

tions

D

epar

tmen

t to

pl

ay r

ole

in t

he

WS

P Te

am

2. V

erify

Sys

tem

Flo

w D

iagr

am

a. M

aint

ain

upda

ted

elec

tron

ic m

aps

of t

he

trea

tmen

t sy

stem

Wat

er p

rodu

ctio

n/tr

eatm

ent

sect

ion

to p

rovi

de

requ

ired

info

rmat

ion;

Map

ping

Sec

tion

to u

pdat

e flo

w c

hart

dia

gram

s

WQ

Dep

artm

ent

to c

oord

inat

e ex

erci

se

b. M

aint

ain

upda

ted

elec

tron

ic m

aps

of w

ater

tr

ansm

issi

on a

nd s

uppl

y ne

twor

k sh

owin

g re

leva

nt

vari

able

s

Ope

ratio

ns D

epar

tmen

t to

pro

vide

dat

a on

exi

stin

g sy

stem

abo

ut p

ipe

size

s, m

ater

ials

, len

gths

, dep

ths

and

age.

Plan

ning

Dep

artm

ent

to p

rovi

de d

ata

on n

ew p

roje

cts

Map

ping

sec

tion

to u

pdat

e el

ectr

onic

and

har

d co

py

map

s of

ret

icul

atio

n di

agra

ms

WQ

Dep

artm

ent

to c

oord

inat

e ex

erci

se

c. U

pdat

e co

nfig

urat

ion

of

supp

ly p

ress

ure

zone

s O

pera

tions

Dep

artm

ent

to c

arry

out

pre

ssur

e te

sts

and

upda

te z

onin

g &

con

figur

atio

n of

sup

ply

pres

sure

zo

nes

Trea

tmen

t pl

ant

to u

pdat

e tr

eatm

ent

plan

t ou

tlet

pres

sure

s

Upd

ate

elec

tron

ic &

har

d co

py m

aps

WQ

Dep

artm

ent

to c

oord

inat

e ex

erci

se

Acti

vity

Res

pons

ibili

ty

Wat

er U

tilit

y (

NW

SC

) S

ervi

ce

Pro

vide

r

(Pri

vate

op

erat

or)

Min

istr

y i/c

of

wat

er a

ffai

rs

Nat

iona

l Bur

eau

of S

tati

stic

s

Mun

icip

al P

ublic

H

ealt

h D

ept

NG

Os/

CB

Os

3. H

azar

d Fa

ctor

s

Soc

io-e

cono

mic

dat

a co

llect

ion

C

ompi

le g

ener

ic s

ocio

-eco

nom

ic

data

and

upd

ate

data

on

wat

er

serv

ices

usa

ge &

acc

ess

Prov

ide

supp

lem

enta

ry

data

Prov

ide

supp

lem

enta

ry d

ata

Avai

l bas

ic d

ata

on p

op. d

ensi

ty &

so

cio-

econ

omic

st

atus

Prov

ide

supp

lem

enta

ry

data

Pr

ovid

e su

pple

men

tary

da

ta

Mai

ntai

n in

vent

ory

of s

anita

tion

serv

ices

G

IS U

nit

to p

lot

prox

imity

sew

ers

to w

ater

pip

es

Prov

ide

Inve

ntor

y of

on

-site

san

itatio

n Pr

ovid

e su

pple

men

tary

da

ta

Mai

ntai

n in

vent

ory

of o

ther

so

urce

s of

faec

al m

atte

r Id

entif

y an

imal

hus

band

ry, e

tc t

hrou

gh in

spec

tion

and

WQ

mon

itorin

g

Prov

ide

nece

ssar

y in

form

atio

n

Upd

ate

data

on

low

-lyin

g ar

eas

G

eogr

aphi

cal i

nfor

mat

ion

and

syst

em in

spec

tion,

up

date

dat

a on

low

-lyin

g ar

eas

Prov

ide

requ

ired

hydr

o ge

olog

ical

da

ta

Anal

ysis

of o

btai

ned

data

to

esta

blis

h pa

tter

ns o

f haz

ards

U

tility

WS

P te

am t

o an

alys

e da

ta

Acti

vity

Res

pons

ibili

ty

Wat

er U

tilit

y

Ser

vice

Pro

vide

r

(Pri

vate

ope

rato

r)

Wat

er U

tilit

y P

rodu

ctio

n D

ept

4. V

ulne

rabi

lity

Fact

ors

Upd

ate

stat

e of

res

ervo

irs

WQ

Dep

artm

ent

to c

arry

out

san

itary

insp

ectio

ns

Plan

ning

Dep

artm

ent

to p

rovi

de in

form

atio

n fo

r ne

w r

eser

voirs

Upd

ate

data

on

othe

r vu

lner

abili

ty

varia

bles

G

IS S

ectio

n to

iden

tify

low

-lyin

g ar

eas;

and

with

pr

edom

inan

t us

age

of h

ouse

hold

sto

rage

; Ke

ep a

nd u

pdat

e da

te o

n pi

pe

leak

ages

, bur

sts,

are

as w

ith

‘spa

ghet

ti’ &

cro

ss-

conn

ectio

ns, a

nd d

isco

ntin

uity

pa

tter

ns.

Hyd

raul

ic m

odel

ling

of d

ispe

rsio

n pa

tter

ns o

f con

tam

inan

ts

Wat

er T

reat

men

t D

epar

tmen

t to

sup

ply

data

on

fluct

uatio

n of

out

let

pres

sure

s

GIS

Sec

tion

to m

aint

ain

and

upda

te h

ydra

ulic

m

aps

Des

ign

and

field

-tes

t hy

drau

lic

mod

el &

pas

s da

ta t

o M

appi

ng

Uni

t

Acti

vity

Res

pons

ibili

ty

Wat

er U

tilit

y W

Q D

ept

Ser

vice

Pro

vide

r

(Pri

vate

ope

rato

r)

Wat

er U

tilit

y M

appi

ng

Uni

t

5. S

yste

m A

sses

smen

t

Lead

Sys

tem

Ass

essm

ent

Pa

rtic

ipat

e in

Sys

tem

As

sess

men

t W

SP

team

Part

icip

ate

in S

yste

m

Asse

ssm

ent

WS

P te

am

Plan

for

syst

em a

sses

smen

ts

WS

P Te

am t

o ac

quire

logi

stic

s fo

r th

e fie

ld t

rips

e.g.

equ

ipm

ent,

tra

nspo

rt &

al

low

ance

s

Dev

elop

san

itary

insp

ectio

n fo

rms

WS

P te

am t

o dr

aft

sani

tary

insp

ectio

n fo

rms

for

vario

us

inst

alla

tions

Car

ry o

ut s

anita

ry in

spec

tion

of

insp

ectio

n po

ints

and

val

idat

e th

e fo

rms

Usi

ng r

elev

ant

sani

tary

insp

ectio

n fo

rms,

WS

P te

am t

o ca

rry

out

syst

em a

sses

smen

t at

var

ious

in

spec

tion

poin

ts s

uch

as s

luic

e va

lves

, pub

lic s

tand

pipe

s,

rese

rvoi

rs, h

ouse

con

nect

ions

.

WS

P te

am t

o va

lidat

e an

d up

date

san

itary

insp

ectio

n fo

rms

basi

ng o

n fie

ld fi

ndin

gs

Car

ry o

ut p

hysi

co-c

hem

ical

tes

ts a

t in

spec

tion

poin

ts

WS

P te

am t

o ca

rry

out

phys

ico-

chem

ical

tes

ts o

f col

our,

tu

rbid

ity, p

H, t

empe

ratu

re, a

nd r

esid

ual c

hlor

ine

Rec

ord

GPS

co-

ordi

nate

s of

in

spec

tion

poin

ts a

nd p

rodu

ce m

aps

WS

P Te

am t

o re

cord

GPS

co-

ordi

nate

s of

sug

gest

ed

cont

rol p

oint

s Pr

oduc

e el

ectr

onic

map

s

Acti

vity

Res

pons

ibili

ty

Wat

er U

tilit

y W

Q

Dep

t S

ervi

ce P

rovi

der

(Pri

vate

ope

rato

r)

Wat

er U

tilit

y M

appi

ng

Uni

t

6. P

rodu

ce r

isk

map

s

Haz

ard

Anal

ysis

W

SP

Team

to

carr

y ou

t ha

zard

ana

lysi

s us

ing

all

data

obt

aine

d in

Act

ivity

3

Vuln

erab

ility

Ana

lysi

s

WS

P Te

am t

o ca

rry

out

haza

rd a

naly

sis

usin

g al

l da

ta o

btai

ned

in A

ctiv

ities

2 &

4

Ris

k m

appi

ng

WS

P Te

am t

o dr

aw a

ris

k m

ap o

n ba

sis

of d

ata

obta

ined

in A

ctiv

ities

4a

and

4b.

Prod

uce

risk

map

in

elec

tron

ic v

ersi

on

7. F

ield

Val

idat

ion

of R

isk

Map

s

Zoni

ng o

f the

dis

trib

utio

n sy

stem

W

SP

Team

to

zone

the

sys

tem

acc

ordi

ng t

o ge

ogra

phic

al lo

catio

n, s

ize

of z

one

depe

ndin

g on

si

ngle

-day

wor

k lo

ad

Carr

y ou

t fie

ldw

ork

Sev

eral

insp

ectio

n te

ams

to b

e se

t up

Car

ry o

ut s

anita

ry s

urve

y to

ver

ify r

isk

map

s

Valid

ate

risk

map

s

Use

obt

aine

d da

ta t

o re

fine

or c

ompl

ete

risk

map

U

pdat

er e

lect

roni

c an

d ha

rdco

py m

aps

acco

rdin

gly

Acti

vity

Res

pons

ibili

ty

Wat

er U

tilit

y W

Q

Dep

t S

ervi

ce P

rovi

der

(Pri

vate

ope

rato

r)

Uti

lity

Top

Man

agem

ent

Exte

rnal

C

onsu

ltan

ts

8. D

evel

op a

com

preh

ensi

ve W

ater

Saf

ety

Pla

n (W

SP

)

Def

ine

Con

trol

Mea

sure

s W

SP

team

mem

bers

to

defin

e su

itabl

e ac

tions

req

uire

d to

lim

it ris

ks fo

r lik

ely

haza

rds.

Def

ine

criti

cal l

imits

W

SP

team

mem

bers

to

defin

e cr

itica

l lim

its t

hat

defin

e pe

rform

ance

env

elop

es fo

r th

e co

ntro

l mea

sure

s

Def

ine

mon

itorin

g fo

r ea

ch c

ontr

ol m

easu

re

WS

P te

am m

embe

rs t

o de

fine

sim

ple

mon

itorin

g va

riabl

es

for

each

con

trol

mea

sure

, to

be d

one

on a

reg

ular

bas

is

Def

ine

corr

ectiv

e ac

tions

for

each

con

trol

mea

sure

W

SP

team

to

defin

e ac

tions

(sh

ort-

and

long

-ter

m)

to b

e ta

ken

in t

he e

vent

of a

failu

re in

the

con

trol

mea

sure

s

Esta

blis

h ve

rific

atio

n sy

stem

s W

SP

team

to

defin

e a

verif

icat

ion

syst

em t

o ch

eck

the

perfo

rman

ce o

f the

con

trol

mea

sure

s, a

nd a

dequ

acy

of t

he

mon

itorin

g sy

stem

. Ver

ifica

tion

to in

clud

e m

ore

qual

ity

varia

bles

, but

to

be d

one

less

reg

ular

ly.

Prov

ide

for

stru

ctur

es, p

roce

dure

s an

d eq

uipm

ent

for

WS

Ps

WS

P te

am t

o de

sign

sui

tabl

e st

ruct

ures

and

pro

cedu

res

for

impl

emen

ting

WS

P.

WS

P te

am t

o pr

omot

e id

ea t

o To

p M

anag

emen

t, b

uy

nece

ssar

y eq

uipm

ent

and

impl

emen

t W

SP

Des

ign

WQ

Info

rmat

ion

Man

agem

ent

Sys

tem

s W

SP

team

to

desi

gn W

Q IM

S t

o cu

t ac

ross

rel

evan

t de

part

men

ts

Top

Man

agem

ent

to

prov

ide

for

WQ

MIS

Cap

acity

bui

ldin

g fo

r W

SPs

W

SP

team

to

draw

cap

acity

bui

ldin

g re

quire

men

ts a

nd

need

s to

ena

ble

WS

Ps t

o be

car

ried

out

at lo

wer

leve

ls

Top

Man

agem

ent

to

prov

ide

for

capa

city

bu

ildin

g

Con

sulta

nts

to

carr

y ou

t ca

paci

ty

build

ing

Eval

uate

and

rev

iew

WS

P W

SP

team

to

eval

uate

and

rev

iew

WS

P pe

riodi

cally

Acti

vity

Res

pons

ibili

ty

Wat

er U

tilit

y

Ser

vice

Pro

vide

r

(Ser

vice

Pro

vide

r)

9. W

Q A

sses

smen

t

Car

ry o

ut fi

eld

sam

plin

g at

the

insp

ectio

n po

ints

usi

ng s

elec

ted

mic

robe

s as

par

amet

ers

W

Q a

nd O

pera

tions

sta

ff to

car

ry o

ut t

he fi

eld

wor

k

Man

agem

ent

to p

rovi

de fi

nanc

ial s

uppo

rt

Car

ry o

ut la

bora

tory

ana

lysi

s of

the

col

lect

ed s

ampl

es

Sam

ples

to

be

anal

ysed

at

the

Util

ity

Lab

Rev

iew

and

rev

ise

WS

P on

bas

is o

f WQ

ass

essm

ent

resu

lts

Rev

iew

con

trol

mea

sure

s, c

orre

ctiv

e ac

tions

and

m

onito

ring

stra

tegi

es

Rev

ise

WS

P ac

cord

ingl

y

Acti

vity

Res

pons

ibili

ty

Uti

lity

WS

P W

SP

tea

m

incl

. N

WS

C,

priv

ate

oper

ator

Mun

icip

al H

ealt

h D

ept

Com

mun

ity

Lead

ers/

Com

mun

ity

grou

ps

Com

mun

ity

mem

bers

In

term

edia

ry

NG

O/C

BO

C

omm

unit

y W

SP

m

embe

rs

10.

Pro

cess

of

invo

lvin

g lo

w-in

com

e co

mm

unit

ies

in W

SP

s

Sel

ect

com

mun

ities

and

com

mun

ity

grou

ps w

illin

g to

par

ticip

ate

in p

ilotin

g co

mm

unity

WSP

s

WS

P te

am

to c

ontr

act

suita

ble

cons

ulta

nt N

GO

w

orki

ng w

ith lo

w-in

com

e co

mm

uniti

es

Util

ity t

o ca

ter

for

co

ntra

ctua

l obl

igat

ions

Mun

icip

al H

ealth

of

ficia

ls c

onsu

lted

on c

hoic

es

Com

mun

ity le

ader

s an

d gr

oups

to

be

cons

ulte

d

C

ontr

acte

d in

term

edia

ry g

roup

to

draw

crit

eria

for

part

icip

atio

n an

d se

lect

com

mun

ities

for

pilo

t st

udy

Prom

otio

n of

WS

Ps

and

initi

al

disc

ussi

on s

essi

ons

with

par

ticip

atin

g co

mm

uniti

es a

nd c

omm

unity

gro

ups

WS

P te

am t

o pr

ovid

e si

mpl

ified

tec

hnic

al

guid

ance

in d

iscu

ssio

ns

Util

ity t

o fin

ance

fiel

d op

erat

ions

Mun

icip

al H

ealth

of

ficia

ls in

volv

ed

Com

mun

ity le

ader

s an

d gr

oups

to

mob

ilise

res

iden

ts fo

r,

& a

tten

d di

scus

sion

se

ssio

ns

Com

mun

ity

mem

bers

to

part

icip

ate

in

initi

al d

iscu

ssio

n m

eetin

gs

Inte

rmed

iary

gro

up t

o ac

t as

faci

litat

ors

of

disc

ussi

on s

essi

ons

Dis

cuss

and

agr

ee o

n sh

arin

g of

rol

es

and

task

s by

com

mun

ity g

roup

s an

d ut

ility

for

com

mun

ity b

ased

WS

Ps

WS

P te

am t

o le

ad t

he

disc

ussi

ons

& p

rovi

de

sim

plifi

ed t

echn

ical

gu

idan

ce

Util

ity t

o fin

ance

fiel

d op

erat

ions

Mun

icip

al H

ealth

of

ficia

ls fu

lly

invo

lved

Com

mun

ity le

ader

s &

gr

oups

to

par

ticip

ate

in d

iscu

ssio

ns

In

term

edia

ry g

roup

to

act

as fa

cilit

ator

s of

di

scus

sion

ses

sion

s

Cap

acity

bui

ldin

g fo

r co

mm

unity

WS

P W

SP

team

In

con

sulta

tion

with

NG

O,

WS

P te

am t

o dr

aw u

p re

quire

men

ts fo

r bu

ildin

g ca

paci

ty o

f sel

ecte

d m

embe

rs o

f com

mun

ity

Util

ity t

o fin

ance

cap

acity

bu

ildin

g bu

dget

Mun

icip

al H

ealth

of

ficia

ls fu

ll in

volv

ed in

ca

paci

ty b

uild

ing

proc

ess

Com

mun

ity le

ader

s an

d gr

oups

to

assi

st in

se

lect

ion

proc

ess

of

suita

ble

mem

bers

of

com

mun

ity

In

term

edia

ry g

roup

to

draw

bud

get,

co

ntrib

ute

to n

eeds

as

sess

men

t, a

nd c

arry

ou

t ca

paci

ty b

uild

ing

Com

mun

ity W

SP

mem

bers

to

atte

nd

and

part

icip

ate

in

capa

city

bui

ldin

g pr

ogra

mm

es

Pilo

t an

d re

view

com

mun

ity W

SPs

W

SP

team

to

pilo

t &

re

view

com

mun

ity W

SP

in c

onsu

ltatio

n w

ith

NG

O

Util

ity t

o fin

ance

co

mm

unity

WS

P ta

sks

Mun

icip

al H

ealth

of

ficia

ls in

volv

ed

in r

evie

w p

roce

ss

Com

mun

ity g

roup

s an

d le

ader

s to

pa

rtic

ipat

e in

rev

iew

pr

oces

s

Com

mun

ity

mem

bers

to

part

icip

ate

in

revi

ew p

roce

ss

Con

sulta

nt N

GO

to

part

icip

ate

in p

ilot

and

revi

ew p

roce

ss

Com

mun

ity W

SP

mem

bers

to

activ

ely

part

icip

ate

Expa

nd c

omm

unity

WS

Ps t

o ot

her

area

s W

SP

team

to

lead

in

proc

ess

of

esta

blis

hmen

t of

com

mun

ity W

SP

mem

bers

Mun

icip

al H

ealth

of

ficia

ls

cons

ulte

d

Com

mun

ity le

ader

s &

gro

ups

to s

elec

t co

mm

unity

WS

P m

embe

rs

Com

mun

ity

mem

bers

to

part

icip

ate

in

revi

ew p

roce

ss

Con

sulta

nt N

GO

to

advi

se w

hich

oth

er

area

s to

exp

and

Com

mun

ity W

SP

mem

bers

to

activ

ely

part

icip

ate

Acti

vity

Res

pons

ibili

ty

Min

istr

y of

W

ater

M

inis

try

of

Hea

lth

Inde

pend

ent

Reg

ulat

or

Wat

er U

tilit

y S

ervi

ce

Pro

vide

r

(Pri

vate

op

erat

or)

Bur

eau

of

Sta

ndar

ds

Com

mun

itie

s In

depe

nden

t C

onsu

ltan

ts

Gov

ernm

ent

Che

mis

t

11

. Es

tabl

ish

WQ

R

egul

ator

y S

yste

ms

Legi

slat

e fo

r W

Q R

egul

ator

y Fr

amew

ork

Wor

k w

ith

rele

vant

go

vern

men

t de

part

men

ts

to h

ave

a le

gal

fram

ewor

k st

reng

then

ed

Part

icip

ate

in

legi

slat

ion

proc

esse

s

Part

icip

ate

in

legi

slat

ion

proc

esse

s

Part

icip

ate

in

legi

slat

ion

proc

esse

s

Fe

ed in

to t

he

legi

slat

ive

proc

ess

Rev

iew

and

rev

ise

WQ

gu

idel

ines

, pol

icie

s an

d st

ruct

ures

Part

icip

ate

in

the

revi

ew

and

revi

sion

pr

oces

s

Take

lead

ing

role

in t

he

revi

ew a

nd

revi

sion

pr

oces

s

Part

icip

ate

in t

he

revi

ew a

nd

revi

sion

pro

cess

Part

icip

ate

in

the

revi

ew

and

revi

sion

pr

oces

s

Part

icip

ate

in

the

revi

ew

and

revi

sion

pr

oces

s

In c

onsu

ltatio

n w

ith o

ther

st

akeh

olde

rs,

esta

blis

h N

atio

nal

Drin

king

Wat

er

Qua

lity

Sta

ndar

ds

Feed

into

the

re

view

and

re

visi

on

proc

ess

Pa

rtic

ipat

e in

th

e re

view

an

d re

visi

on

proc

ess

Appo

int

Inde

pend

ent

WQ

Au

dito

rs t

hrou

gh o

pen

tend

erin

g

Part

icip

ate

in

proc

ess

of

appo

intin

g au

dito

rs

Appo

int

Chi

ef

WQ

Insp

ecto

r,

who

lead

s th

e pr

oces

s of

re

crui

ting

Audi

tors

Part

icip

ate

in

proc

ess

of

appo

intin

g au

dito

rs a

nd fu

nd

audi

t op

erat

ions

Com

petit

ive

bidd

ing

Part

icip

ate

in

proc

ess

of

appo

intin

g au

dito

rs

Reg

ular

insp

ectio

n of

util

ity

labs

and

oth

er fa

cilit

ies

Pr

ovid

e m

anpo

wer

su

ppor

t fo

r in

spec

tion

Rec

eive

rep

orts

Av

ail f

acili

ties

for

insp

ectio

n Av

ail f

acili

ties

for

insp

ectio

n

C

arry

out

in

spec

tion

Rgu

lar

revi

ew o

f WS

Ps

Pr

ovid

e m

anpo

wer

su

ppor

t fo

r in

spec

tion

Rec

eive

rep

orts

Pr

esen

t W

SPs

Pr

esen

t W

SPs

Part

icip

ate

in

revi

ew

proc

ess

Lead

rol

e in

re

view

pro

cess

Str

engt

hen

the

nat

iona

l W

Q d

atab

ase

Prov

ide

hist

oric

al

data

Prov

ide

hist

oric

al d

ata

& p

artic

ipat

e in

pro

cess

Rec

eive

WQ

m

anag

emen

t in

form

atio

n

Prov

ide

WQ

m

onito

ring

&

surv

eilla

nce

data

Prov

ide

WQ

m

onito

ring

&

surv

eilla

nce

data

Rec

eive

, an

alys

e an

d pr

oces

s da

ta

Reg

ular

WQ

Aud

its

Pr

ovid

e R

ecei

ve r

epor

ts

dd

tf

dR

ecei

ve

fdb

k

R

ecei

ve

fdb

kC

arry

out

aud

its

Car

ry o

ut

id

dt

man

pow

er

supp

ort

for

audi

ts

and

send

out

feed

ba

ck

feed

back

fe

edba

ck

inde

pend

ent

sam

ple

anal

ysis

Annex 4:Pipe attributes used in static vulnerability

1. Pipe attribute scoring for static vulnerability assessment, Kampala

Pipe Material

Pipe Material Failure Friction Chlorine Consumption Vulnerability

PVC 4 1 1 6

Flexible Polyethylene (PE) 6 2 2 10

Asbestos Cement (AC) 2 6 3 11

Ductile Iron (DI) 3 3 5 11

Steel (ST) 1 5 6 12

Galvanised Iron (GI) 5 4 4 13

Pipe Diameter Pipe Diameter Vulnerability Score Pipe Diameter Vulnerability Score

50mm 2 300mm 1

65mm 2 350mm 1

80mm 2 400mm 1

100mm 2 450mm 1

125mm 2 500mm 1

150mm 2 600mm 1

200mm 2 700mm 1

250mm 2 800mm 1

Pipe Length

Pipe Length (m) Vulnerability Score Pipe Length (m)

Vulnerability Score

Pipe Length (m)

Vulnerability Score

4000 4 750 2 100 1

3000 4 500 2 50 1

2000 3 350 2 20 1

1500 3 250 2 10 1

1000 3 150 2 5 1

Pipe Age Year of Installation Vulnerability

1929-1958 2

1959 – 2002 1

Annex 5:Extract from Kampala Water Safety Plan

AN

NE

X 5

: WA

TE

R S

AFE

TY

PL

AN

S W

ater

safe

ty p

lan

for

Muy

enga

serv

ice

rese

rvoi

r A

,B (w

ith c

onic

al v

ents

)

Cri

tical

lim

its

Mon

itori

ng

Haz

ard

even

t C

ause

R

isk

Con

trol

m

easu

re

Targ

et

Act

ion

Wha

t W

hen

W

ho

Cor

rect

ive

actio

n V

erifi

catio

n

Mic

robi

al

cont

amin

atio

n of

se

rvic

e re

serv

oir

from

bird

s

Bird

s fae

ces e

nter

th

roug

h ve

nts

beca

use

cove

rs

disl

odge

d

Like

ly/

Cat

astro

phic

V

ent c

over

s re

mai

n in

pl

ace

Ven

ts c

over

ed

50%

of v

ent

supp

ort s

truts

are

da

mag

ed

Sani

tary

in

spec

tion

Wee

kly

Ope

ratio

ns

staf

f R

epai

r and

repl

ace

dam

aged

ven

ts.

E.co

li

Faec

al st

rept

ococ

ci.

Sani

tary

insp

ectio

n (W

QC

D)

Mic

robi

al

cont

amin

atio

n of

se

rvic

e re

serv

oir

from

bird

s

Bird

s fae

ces e

nter

th

roug

h op

en

insp

ectio

n ha

tche

s

Mod

erat

e/

Cat

astro

phic

In

spec

tion

cove

rs re

mai

n in

pla

ce

Insp

ectio

n co

vers

lo

cked

in p

lace

In

spec

tion

cove

rs

not i

n pl

ace

or

unlo

cked

Sani

tary

in

spec

tion

Chl

orin

e re

sidu

al

Dai

ly

Ope

ratin

g st

aff

Rep

lace

in

spec

tion

cove

r an

d ch

eck

chlo

rine

cons

umpt

ion

E.co

li

Faec

al st

rept

ococ

ci.

Sani

tary

insp

ectio

n (W

QC

D)

Mic

robi

al

cont

amin

atio

n of

se

rvic

e re

serv

oir

from

bird

s and

an

imal

s

Bird

s and

ani

mal

fa

eces

ent

er

thro

ugh

dam

aged

or

cor

rode

d in

spec

tion

hatc

hes

Unl

ikel

y/

Cat

astro

phic

In

spec

tion

cove

rs a

nd

hatc

hes a

re

kept

in g

ood

cond

ition

Insp

ectio

n ha

tche

s and

co

vers

show

no

visi

ble

sign

of

dam

age

or

corr

osio

n

Vis

ible

sign

s of

dam

age

or

corr

osio

n

Sani

tary

in

spec

tion

Qua

rterly

/ an

nual

ly

Ope

ratin

g st

aff

Rep

lace

dam

aged

or

cor

rode

d co

vers

an

d ha

tche

s

Insp

ectio

n (W

QC

D)

Mic

robi

al

cont

amin

atio

n of

se

rvic

e re

serv

oir

from

ani

mal

s

Rod

ents

or

amph

ibia

ns e

nter

se

rvic

e re

serv

oir

thro

ugh

vent

s be

caus

e co

vers

da

mag

ed

Mod

erat

e/

Min

or

Ven

t cov

ers

rem

ain

in

plac

e

Ven

ts c

over

ed

50%

of v

ent

supp

ort s

truts

are

da

mag

ed

Sani

tary

in

spec

tion

Wee

kly

Ope

ratio

ns

staf

f R

epai

r and

repl

ace

dam

aged

ven

ts.

E.co

li

Faec

al st

rept

ococ

ci.

Sani

tary

insp

ectio

n (W

QC

D)

Mic

robi

al

cont

amin

atio

n of

w

ater

by

bird

s an

d an

imal

s

Con

tam

inat

ed

wat

er b

uild

s up

on

roof

of t

ank

beca

use

of p

oor

drai

nage

and

in

unda

tes

insp

ectio

n co

vers

Mod

erat

e/

Maj

or

Roo

f gut

ters

fo

r eas

y dr

aina

ge o

f ra

idnw

ater

Gut

ters

free

of

debr

is

Gut

ters

blo

cked

, st

art o

f rai

ny

seas

on

Sani

tary

in

spec

tion

Qua

rterly

O

pera

tions

st

aff

Cle

ar g

utte

rs

E.co

li

Faec

al st

rept

ococ

ci.

Sani

tary

insp

ectio

n (W

QC

D)

Ani

mal

and

bird

fa

ecal

A

nim

al a

nd b

ird

faec

al m

ater

ial

build

s up

on ro

of

of se

rvic

e re

serv

oir

Like

ly/

Mod

erat

e Tr

ees d

o no

t ov

erha

ng th

e re

serv

oir a

nd

roof

s kep

t cl

ean

Tree

bra

nche

s 2m

from

re

serv

oir r

oof;

roof

cle

an

Tree

s with

in

0.5m

of r

oof;

roof

vis

ibly

dirt

y

Sani

tary

in

spec

tion

Qua

rterly

O

pera

ting

staf

f C

ut b

ack

tree

bran

ches

and

cl

ean

roof

E.co

li

Faec

al st

rept

ococ

ci.

Sani

tary

insp

ectio

n (W

QC

D)

Ingr

ess o

f co

ntam

inat

ion

at

inle

t val

ve

Inun

datio

n of

inle

t va

lve

of su

rfac

e w

ater

and

Mod

erat

e/

Maj

or

Goo

d dr

aina

ge in

va

lve

box;

co

vers

on

valv

e bo

x;

valv

e pa

ckin

g in

goo

d co

nditi

on

Val

ve b

oxes

co

vere

d an

d do

no

t hav

e st

andi

ng

wat

er o

r org

anic

m

ater

ial i

n ba

se;

pack

ing

does

not

le

ak

Cov

er o

ut o

f pl

ace,

sign

s of

wat

er o

r mat

eria

l bu

ild-u

p;

pack

ing

show

s vi

sibl

e si

gns o

f da

mag

e

Sani

tary

in

spec

tion;

w

asho

ut d

rain

te

sts

Mon

thly

O

pera

ting

staf

f C

lean

val

ve b

ox

and

repl

ace

cove

r; cl

ear w

asho

ut

drai

n; re

plac

e pa

ckin

g

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Ingr

ess o

f co

ntam

inat

ion

at

outle

t/was

hout

va

lve

Val

ve is

inun

date

d by

surf

ace

wat

er

or w

aste

wat

er

from

rese

rvoi

r

Alm

ost

certa

in/

Maj

or

Effe

ctiv

e w

asho

ut

drai

ns;

cove

red

valv

e bo

x; g

ood

qual

ity v

alve

pa

ckin

g

Val

ve b

ox

cove

red

and

no

visi

ble

sign

s or

wat

er o

r was

te

mat

ter i

n bo

x;

was

hout

dra

in

func

tiona

l; pa

ckin

g in

goo

d co

nditi

on

Dra

inag

e ar

ound

bo

x bl

ocke

d or

da

mag

ed;

was

hout

dra

in

bloc

ked;

wat

er o

r w

aste

bui

ld-u

p in

va

lve

box;

pa

ckin

g sh

owin

g si

gns o

f wea

r

Sani

tary

in

spec

tion;

w

asho

ut d

rain

te

st

Mon

thly

(SI)

A

nnua

l (dr

ain

test

)

Ope

ratin

g st

aff

Mak

e su

re a

ll bo

xes h

ave

was

hout

dra

in th

at

is je

tted

as p

art o

f re

gula

r m

aint

enan

ce;

rout

ine

pack

ing

repl

acem

ent

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n fr

om b

iofil

m o

r se

dim

ent

Bio

film

slou

ghs

off o

r sed

imen

t is

dist

urbe

d.

Like

ly/

Min

or

Reg

ular

cl

eani

ng o

f se

rvic

e re

serv

oir,

drai

n-do

wn

of

rese

rvoi

r and

cl

ear

sedi

men

t

Inte

rior o

f re

serv

oir i

s cle

an

and

sedi

men

t is

min

imis

ed a

nd

undi

stur

bed

Bio

film

de

velo

ps,

incr

ease

in

chlo

rine

cons

umpt

ion

Sani

tary

in

spec

tion,

ch

lorin

e re

sidu

als,

turb

idity

Mon

thly

O

pera

ting

staf

f Ta

ke re

serv

oir

off-

line

and

clea

nd

Aer

omon

as

Bio

film

cou

pons

Sa

nita

ry in

spec

tion

(WQ

CD

)

Wat

er sa

fety

pla

n fo

r M

uyen

ga se

rvic

e re

serv

oirs

C,D

,E (w

ith e

lbow

and

mes

h ve

nts)

C

ritic

al li

mits

M

onito

ring

H

azar

d ev

ent

Cau

se

Ris

k C

ontr

ol

mea

sure

Ta

rget

A

ctio

n W

hat

Whe

n

Who

C

orre

ctiv

e ac

tion

Ver

ifica

tion

Mic

robi

al

cont

amin

atio

n of

se

rvic

e re

serv

oir

from

bird

s

Bird

s fae

ces e

nter

th

roug

h op

en

insp

ectio

n ha

tche

s

Mod

erat

e/

Cat

astro

phic

In

spec

tion

cove

rs re

mai

n in

pla

ce

Insp

ectio

n co

vers

lo

cked

in p

lace

In

spec

tion

cove

rs

not i

n pl

ace

or

unlo

cked

Sani

tary

in

spec

tion

Chl

orin

e re

sidu

al

Dai

ly

Ope

ratin

g st

aff

Rep

lace

in

spec

tion

cove

r an

d ch

eck

chlo

rine

cons

umpt

ion

E.co

li

Faec

al st

rept

ococ

ci.

Sani

tary

insp

ectio

n (W

QC

D)

Mic

robi

al

cont

amin

atio

n of

se

rvic

e re

serv

oir

from

bird

s and

an

imal

s

Bird

s and

ani

mal

fa

eces

ent

er

thro

ugh

dam

aged

or

cor

rode

d in

spec

tion

hatc

hes

Unl

ikel

y/

Cat

astro

phic

In

spec

tion

cove

rs a

nd

hatc

hes a

re

kept

in g

ood

cond

ition

Insp

ectio

n ha

tche

s and

co

vers

show

no

visi

ble

sign

of

dam

age

or

corr

osio

n

Vis

ible

sign

s of

dam

age

or

corr

osio

n

Sani

tary

in

spec

tion

Qua

rterly

/ an

nual

ly

Ope

ratin

g st

aff

Rep

lace

dam

aged

or

cor

rode

d co

vers

an

d ha

tche

s

Insp

ectio

n (W

QC

D)

Mic

robi

al

cont

amin

atio

n of

se

rvic

e re

serv

oir

from

ani

mal

s

Rod

ents

or

amph

ibia

ns e

nter

se

rvic

e re

serv

oir

thro

ugh

vent

s be

caus

e m

esh

dam

aged

Mod

erat

e/

Min

or

Ven

t mes

h in

pl

ace

V

ent m

esh

in

good

con

ditio

n M

esh

show

s vi

sibl

e si

gns o

f da

mag

e

Sani

tary

in

spec

tion

Wee

kly

Ope

ratio

ns

staf

f R

epai

r and

repl

ace

dam

aged

ven

ts.

E.co

li

Faec

al st

rept

ococ

ci.

Sani

tary

insp

ectio

n (W

QC

D)

Mic

robi

al

cont

amin

atio

n of

w

ater

by

bird

s an

d an

imal

s

Con

tam

inat

ed

wat

er b

uild

s up

on

roof

of t

ank

beca

use

of p

oor

drai

nage

and

in

unda

tes

insp

ectio

n co

vers

Mod

erat

e/

Maj

or

Roo

f gut

ters

fo

r eas

y dr

aina

ge o

f ra

inw

ater

Gut

ters

free

of

debr

is

Gut

ters

blo

cked

, st

art o

f rai

ny

seas

on

Sani

tary

in

spec

tion

Qua

rterly

O

pera

tions

st

aff

Cle

ar g

utte

rs

E.co

li

Faec

al st

rept

ococ

ci.

Sani

tary

insp

ectio

n (W

QC

D)

Ani

mal

and

bird

fa

ecal

A

nim

al a

nd b

ird

faec

al m

ater

ial

build

s up

on ro

of

of se

rvic

e re

serv

oir

Like

ly/

Mod

erat

e Tr

ees d

o no

t ov

erha

ng th

e re

serv

oir a

nd

roof

s kep

t cl

ean

Tree

bra

nche

s 2m

from

re

serv

oir r

oof;

roof

cle

an

Tree

s with

in

0.5m

of r

oof;

roof

vis

ibly

dirt

y

Sani

tary

in

spec

tion

Qua

rterly

O

pera

ting

staf

f C

ut b

ack

tree

bran

ches

and

cl

ean

roof

E.co

li

Faec

al st

rept

ococ

ci.

Sani

tary

insp

ectio

n (W

QC

D)

Ingr

ess o

f co

ntam

inat

ion

at

inle

t val

ve

Inun

datio

n of

inle

t va

lve

of su

rfac

e w

ater

and

Mod

erat

e/

Maj

or

Goo

d dr

aina

ge in

va

lve

box;

co

vers

on

valv

e bo

x;

valv

e pa

ckin

g in

goo

d co

nditi

on

Val

ve b

oxes

co

vere

d an

d do

no

t hav

e st

andi

ng

wat

er o

r org

anic

m

ater

ial i

n ba

se;

pack

ing

does

not

le

ak

Cov

er o

ut o

f pl

ace,

sign

s of

wat

er o

r mat

eria

l bu

ild-u

p;

pack

ing

show

s vi

sibl

e si

gns o

f da

mag

e

Sani

tary

in

spec

tion;

w

asho

ut d

rain

te

sts

Mon

thly

O

pera

ting

staf

f C

lean

val

ve b

ox

and

repl

ace

cove

r; cl

ear w

asho

ut

drai

n; re

plac

e pa

ckin

g

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Ingr

ess o

f co

ntam

inat

ion

at

outle

t/was

hout

va

lve

Val

ve is

inun

date

d by

surf

ace

wat

er

or w

aste

wat

er

from

rese

rvoi

r

Alm

ost

certa

in/

Maj

or

Effe

ctiv

e w

asho

ut

drai

ns;

cove

red

valv

e bo

x; g

ood

qual

ity v

alve

pa

ckin

g

Val

ve b

ox

cove

red

and

no

visi

ble

sign

s or

wat

er o

r was

te

mat

ter i

n bo

x;

was

hout

dra

in

func

tiona

l; pa

ckin

g in

goo

d co

nditi

on

Dra

inag

e ar

ound

bo

x bl

ocke

d or

da

mag

ed;

was

hout

dra

in

bloc

ked;

wat

er o

r w

aste

bui

ld-u

p in

va

lve

box;

pa

ckin

g sh

owin

g si

gns o

f wea

r

Sani

tary

in

spec

tion;

w

asho

ut d

rain

te

st

Mon

thly

(SI)

A

nnua

l (dr

ain

test

)

Ope

ratin

g st

aff

Mak

e su

re a

ll bo

xes h

ave

was

hout

dra

in th

at

is je

tted

as p

art o

f re

gula

r m

aint

enan

ce;

rout

ine

pack

ing

repl

acem

ent

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n fr

om b

iofil

m o

r se

dim

ent

Bio

film

slou

ghs

off o

r sed

imen

t is

dist

urbe

d.

Like

ly/

Min

or

Reg

ular

cl

eani

ng o

f se

rvic

e re

serv

oir,

drai

n-do

wn

of

rese

rvoi

r and

cl

ear

sedi

men

t

Inte

rior o

f re

serv

oir i

s cle

an

and

sedi

men

t is

min

imis

ed a

nd

undi

stur

bed

Bio

film

de

velo

ps,

incr

ease

in

chlo

rine

cons

umpt

ion

Sani

tary

in

spec

tion,

ch

lorin

e re

sidu

als,

turb

idity

Mon

thly

O

pera

ting

staf

f Ta

ke re

serv

oir

off-

line

and

clea

nd

Aer

omon

as

Bio

film

cou

pons

Sa

nita

ry in

spec

tion

(WQ

CD

)

Wat

er sa

fety

pla

n fo

r di

stri

butio

n fr

om M

uyen

ga se

rvic

e re

serv

oirs

Cri

tical

lim

its

Mon

itori

ng

Haz

ard

even

t C

ause

R

isk

Con

trol

m

easu

re

Targ

et

Act

ion

Wha

t W

hen

W

ho

Cor

rect

ive

actio

n V

erifi

catio

n

Mic

robi

al

cont

amin

atio

n at

va

lve

V92

8 V

190

Blo

ck M

ap 1

617

Ingr

ess o

f co

ntam

inat

ed

wat

er a

t the

val

ve

box

Like

ly/

Cat

astro

phic

G

ood

exte

rnal

an

d in

tern

al

drai

nage

; st

ruct

ural

in

tegr

ity o

f box

; va

lve

pack

ing

in

good

con

ditio

n

Inte

rnal

and

ex

tern

al d

rain

s in

good

con

ditio

n;

valv

e bo

x do

es

not r

equi

re

repa

irs; v

ale

pack

ing

does

not

le

ak

Evid

ence

of d

rain

bl

ocka

ge, s

igns

of

dam

age

to d

rain

s;

sign

s of d

amag

e to

bo

x; v

alve

pac

king

le

akin

g

Sani

tary

in

spec

tion,

tu

rbid

ity,

chlo

rine

resi

dual

Mon

thly

O

pera

ting

staf

f En

sure

dra

ins

are

clea

red

and

any

repa

irs

mad

e to

dra

ins

and

valv

e bo

x;

repl

ace

valv

e pa

ckin

g

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n at

va

lve

V37

4 B

lock

Map

191

7

Ingr

ess o

f co

ntam

inat

ed

wat

er a

t the

val

ve

box

Like

ly/

Cat

astro

phic

G

ood

exte

rnal

an

d in

tern

al

drai

nage

; st

ruct

ural

in

tegr

ity o

f box

; va

lve

pack

ing

in

good

con

ditio

n

Inte

rnal

and

ex

tern

al d

rain

s in

good

con

ditio

n;

valv

e bo

x do

es

not r

equi

re

repa

irs; v

ale

pack

ing

does

not

le

ak

Evid

ence

of d

rain

bl

ocka

ge, s

igns

of

dam

age

to d

rain

s;

sign

s of d

amag

e to

bo

x; v

alve

pac

king

le

akin

g

Sani

tary

in

spec

tion,

tu

rbid

ity,

chlo

rine

resi

dual

Mon

thly

O

pera

ting

staf

f En

sure

dra

ins

are

clea

red

and

repa

irs m

ade

to

drai

ns a

nd v

alve

bo

x; re

plac

e va

lve

pack

ing

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n at

va

lve

V19

9/V

297

Blo

ck M

ap 2

016

Ingr

ess o

f co

ntam

inat

ed

wat

er a

t the

val

ve

box

Like

ly/

Maj

or

Goo

d ex

tern

al

and

inte

rnal

dr

aina

ge;

stru

ctur

al

inte

grity

of b

ox;

valv

e pa

ckin

g in

go

od c

ondi

tion

Inte

rnal

and

ex

tern

al d

rain

s in

good

con

ditio

n;

valv

e bo

x do

es

not r

equi

re

repa

irs; v

ale

pack

ing

does

not

le

ak

Evid

ence

of d

rain

bl

ocka

ge, s

igns

of

dam

age

to d

rain

s;

sign

s of d

amag

e to

bo

x; v

alve

pac

king

le

akin

g

Sani

tary

in

spec

tion,

tu

rbid

ity,

chlo

rine

resi

dual

Mon

thly

O

pera

ting

staf

f En

sure

dra

ins

are

clea

red

and

repa

irs m

ade

to

drai

ns a

nd v

alve

bo

x; re

plac

e va

lve

pack

ing

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n at

va

lve

V10

54

Blo

ck M

ap 1

621

Ingr

ess o

f co

ntam

inat

ed

wat

er a

t the

val

ve

box

Like

ly/

Maj

or

Goo

d ex

tern

al

and

inte

rnal

dr

aina

ge;

stru

ctur

al

inte

grity

of b

ox;

valv

e pa

ckin

g in

go

od c

ondi

tion

Inte

rnal

and

ex

tern

al d

rain

s in

good

con

ditio

n;

valv

e bo

x do

es

not r

equi

re

repa

irs; v

ale

pack

ing

does

not

le

ak

Evid

ence

of d

rain

bl

ocka

ge, s

igns

of

dam

age

to d

rain

s;

sign

s of d

amag

e to

bo

x; v

alve

pac

king

le

akin

g

Sani

tary

in

spec

tion,

tu

rbid

ity,

chlo

rine

resi

dual

Mon

thly

O

pera

ting

staf

f En

sure

dra

ins

are

clea

red

and

repa

irs m

ade

to

drai

ns a

nd v

alve

bo

x; re

plac

e va

lve

pack

ing

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n at

va

lve

V43

8 B

lock

Map

272

6

Ingr

ess o

f co

ntam

inat

ed

wat

er a

t the

val

ve

box

Like

ly/

Mod

erat

e G

ood

exte

rnal

an

d in

tern

al

drai

nage

; st

ruct

ural

in

tegr

ity o

f box

; va

lve

pack

ing

in

good

con

ditio

n

Inte

rnal

and

ex

tern

al d

rain

s in

good

con

ditio

n;

valv

e bo

x do

es

not r

equi

re

repa

irs; v

ale

pack

ing

does

not

le

ak

Evid

ence

of d

rain

bl

ocka

ge, s

igns

of

dam

age

to d

rain

s;

sign

s of d

amag

e to

bo

x; v

alve

pac

king

le

akin

g

Sani

tary

in

spec

tion,

tu

rbid

ity,

chlo

rine

resi

dual

Mon

thly

O

pera

ting

staf

f En

sure

dra

ins

are

clea

red

and

repa

irs m

ade

to

drai

ns a

nd v

alve

bo

x; re

plac

e va

lve

pack

ing

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n at

va

lve

V12

89

Blo

ck M

ap 2

712

Ingr

ess o

f co

ntam

inat

ed

wat

er a

t the

val

ve

box

Like

ly/

Mod

erat

e G

ood

exte

rnal

an

d in

tern

al

drai

nage

; st

ruct

ural

in

tegr

ity o

f box

; va

lve

pack

ing

in

good

con

ditio

n

Inte

rnal

and

ex

tern

al d

rain

s in

good

con

ditio

n;

valv

e bo

x do

es

not r

equi

re

repa

irs; v

ale

pack

ing

does

not

le

ak

Evid

ence

of d

rain

bl

ocka

ge, s

igns

of

dam

age

to d

rain

s;

sign

s of d

amag

e to

bo

x; v

alve

pac

king

le

akin

g

Sani

tary

in

spec

tion,

tu

rbid

ity,

chlo

rine

resi

dual

Mon

thly

O

pera

ting

staf

f En

sure

dra

ins

are

clea

red

and

repa

irs m

ade

to

drai

ns a

nd v

alve

bo

x; re

plac

e va

lve

pack

ing

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n at

va

lve

V46

9 B

lock

Map

212

0

Ingr

ess o

f co

ntam

inat

ed

wat

er a

t the

val

ve

box

Like

ly/

Mod

erat

e G

ood

exte

rnal

an

d in

tern

al

drai

nage

; st

ruct

ural

in

tegr

ity o

f box

; va

lve

pack

ing

in

good

con

ditio

n

Inte

rnal

and

ex

tern

al d

rain

s in

good

con

ditio

n;

valv

e bo

x do

es

not r

equi

re

repa

irs; v

ale

pack

ing

does

not

le

ak

Evid

ence

of d

rain

bl

ocka

ge, s

igns

of

dam

age

to d

rain

s;

sign

s of d

amag

e to

bo

x; v

alve

pac

king

le

akin

g

Sani

tary

in

spec

tion,

tu

rbid

ity,

chlo

rine

resi

dual

Mon

thly

O

pera

ting

staf

f En

sure

dra

ins

are

clea

red

and

repa

irs m

ade

to

drai

ns a

nd v

alve

bo

x; re

plac

e va

lve

pack

ing

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n at

va

lve

V81

1 B

lock

Map

201

8

Ingr

ess o

f co

ntam

inat

ed

wat

er a

t the

val

ve

box

Like

ly/

Mod

erat

e G

ood

exte

rnal

an

d in

tern

al

drai

nage

; st

ruct

ural

in

tegr

ity o

f box

; va

lve

pack

ing

in

good

con

ditio

n

Inte

rnal

and

ex

tern

al d

rain

s in

good

con

ditio

n;

valv

e bo

x do

es

not r

equi

re

repa

irs; v

ale

pack

ing

does

not

le

ak

Evid

ence

of d

rain

bl

ocka

ge, s

igns

of

dam

age

to d

rain

s;

sign

s of d

amag

e to

bo

x; v

alve

pac

king

le

akin

g

Sani

tary

in

spec

tion,

tu

rbid

ity,

chlo

rine

resi

dual

Mon

thly

O

pera

ting

staf

f En

sure

dra

ins

are

clea

red

and

repa

irs m

ade

to

drai

ns a

nd v

alve

bo

x; re

plac

e va

lve

pack

ing

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n at

va

lve

V13

47

Blo

ck M

ap 2

917

Ingr

ess o

f co

ntam

inat

ed

wat

er a

t the

val

ve

box

Like

ly/

Mod

erat

e G

ood

exte

rnal

an

d in

tern

al

drai

nage

; st

ruct

ural

in

tegr

ity o

f box

; va

lve

pack

ing

in

good

con

ditio

n

Inte

rnal

and

ex

tern

al d

rain

s in

good

con

ditio

n;

valv

e bo

x do

es

not r

equi

re

repa

irs; v

ale

pack

ing

does

not

le

ak

Evid

ence

of d

rain

bl

ocka

ge, s

igns

of

dam

age

to d

rain

s;

sign

s of d

amag

e to

bo

x; v

alve

pac

king

le

akin

g

Sani

tary

in

spec

tion,

tu

rbid

ity,

chlo

rine

resi

dual

Mon

thly

O

pera

ting

staf

f En

sure

dra

ins

are

clea

red

and

repa

irs m

ade

to

drai

ns a

nd v

alve

bo

x; re

plac

e va

lve

pack

ing

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n at

va

lve

V14

27

Blo

ck M

ap 1

419

Ingr

ess o

f co

ntam

inat

ed

wat

er a

t the

val

ve

box

Like

ly/

Min

or

Goo

d ex

tern

al

and

inte

rnal

dr

aina

ge;

stru

ctur

al

inte

grity

of b

ox;

valv

e pa

ckin

g in

go

od c

ondi

tion

Inte

rnal

and

ex

tern

al d

rain

s in

good

con

ditio

n;

valv

e bo

x do

es

not r

equi

re

repa

irs; v

ale

pack

ing

does

not

le

ak

Evid

ence

of d

rain

bl

ocka

ge, s

igns

of

dam

age

to d

rain

s;

sign

s of d

amag

e to

bo

x; v

alve

pac

king

le

akin

g

Sani

tary

in

spec

tion,

tu

rbid

ity,

chlo

rine

resi

dual

Mon

thly

O

pera

ting

staf

f En

sure

dra

ins

are

clea

red

and

repa

irs m

ade

to

drai

ns a

nd v

alve

bo

x; re

plac

e va

lve

pack

ing

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n at

va

lve

V15

31

Blo

ck M

ap 1

720

Ingr

ess o

f co

ntam

inat

ed

wat

er a

t the

val

ve

box

Like

ly/

Min

or

Goo

d ex

tern

al

and

inte

rnal

dr

aina

ge;

stru

ctur

al

inte

grity

of b

ox;

valv

e pa

ckin

g in

go

od c

ondi

tion

Inte

rnal

and

ex

tern

al d

rain

s in

good

con

ditio

n;

valv

e bo

x do

es

not r

equi

re

repa

irs; v

ale

pack

ing

does

not

le

ak

Evid

ence

of d

rain

bl

ocka

ge, s

igns

of

dam

age

to d

rain

s;

sign

s of d

amag

e to

bo

x; v

alve

pac

king

le

akin

g

Sani

tary

in

spec

tion,

tu

rbid

ity,

chlo

rine

resi

dual

Mon

thly

O

pera

ting

staf

f En

sure

dra

ins

are

clea

red

and

repa

irs m

ade

to

drai

ns a

nd v

alve

bo

x; re

plac

e va

lve

pack

ing

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n at

va

lve

V13

45

Blo

ck M

ap 3

010

Ingr

ess o

f co

ntam

inat

ed

wat

er a

t the

val

ve

box

Like

ly/

Min

or

Goo

d ex

tern

al

and

inte

rnal

dr

aina

ge;

stru

ctur

al

inte

grity

of b

ox;

valv

e pa

ckin

g in

go

od c

ondi

tion

Inte

rnal

and

ex

tern

al d

rain

s in

good

con

ditio

n;

valv

e bo

x do

es

not r

equi

re

repa

irs; v

ale

pack

ing

does

not

le

ak

Evid

ence

of d

rain

bl

ocka

ge, s

igns

of

dam

age

to d

rain

s;

sign

s of d

amag

e to

bo

x; v

alve

pac

king

le

akin

g

Sani

tary

in

spec

tion,

tu

rbid

ity,

chlo

rine

resi

dual

Mon

thly

O

pera

ting

staf

f En

sure

dra

ins

are

clea

red

and

repa

irs m

ade

to

drai

ns a

nd v

alve

bo

x; re

plac

e va

lve

pack

ing

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n at

va

lve

V13

35

Blo

ck M

ap 3

111

Ingr

ess o

f co

ntam

inat

ed

wat

er a

t the

val

ve

box

Like

ly/

Min

or

Goo

d ex

tern

al

and

inte

rnal

dr

aina

ge;

stru

ctur

al

inte

grity

of b

ox;

valv

e pa

ckin

g in

go

od c

ondi

tion

Inte

rnal

and

ex

tern

al d

rain

s in

good

con

ditio

n;

valv

e bo

x do

es

not r

equi

re

repa

irs; v

ale

pack

ing

does

not

le

ak

Evid

ence

of d

rain

bl

ocka

ge, s

igns

of

dam

age

to d

rain

s;

sign

s of d

amag

e to

bo

x; v

alve

pac

king

le

akin

g

Sani

tary

in

spec

tion,

tu

rbid

ity,

chlo

rine

resi

dual

Mon

thly

O

pera

ting

staf

f En

sure

dra

ins

are

clea

red

and

repa

irs m

ade

to

drai

ns a

nd v

alve

bo

x; re

plac

e va

lve

pack

ing

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n at

fir

e hy

dran

t H

533/

V12

2 B

lock

Map

201

9

Ingr

ess o

f co

ntam

inat

ed

wat

er th

roug

h hy

dran

t val

ve

Mod

erat

e/

Mod

erat

e G

ood

inte

rnal

an

d ex

tern

al

drai

nage

; val

ve

box

inte

grity

; va

lve

box

kept

cl

ean

Dra

in c

lear

; val

ve

box

in g

ood

cond

ition

and

cl

ear o

f any

deb

ris

Evid

ence

of d

rain

bl

ocka

ge, s

igns

of

dam

age

to b

ox;

valv

e pa

ckin

g le

akin

g; o

rgan

ic

mat

eria

l bui

lt-up

Sani

tary

in

spec

tion,

tu

rbid

ity,

chlo

rine

resi

dual

Mon

thly

O

pera

ting

staf

f En

sure

dra

ins

are

clea

red

and

repa

irs m

ade

to

drai

ns a

nd v

alve

bo

x; re

plac

e va

lve

pack

ing

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n in

di

strib

utio

n at

ro

ad c

ross

ings

Con

tam

inat

ed

wat

er e

nter

s th

roug

h da

mag

ed

pipe

s

Mod

erat

e/

For i

mpa

ct

ratin

g se

e A

nnex

1

Pipe

s bur

ied

at

dept

h on

ro

adsi

de, c

olla

rs

rein

forc

e jo

ints

Pipe

s bur

ied,

no

sign

of l

eaks

Pi

pes e

xpos

ed; s

igns

of

leak

s Sa

nita

ry

insp

ectio

n,

turb

idity

, ch

lorin

e re

sidu

al

See

anne

x 2:

Pr

imar

y -

mon

thly

Se

cond

ary

- qu

arte

rly

Terti

ary

(sam

ple)

Ope

ratin

g st

aff

Rep

air l

eaks

, bu

ry p

ipes

and

re

info

rce

join

ts

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n in

di

strib

utio

n at

ch

anne

l/dra

in

cros

sing

Con

tam

inat

ed

wat

er e

nter

s whe

n da

mag

ed p

ipe

inun

date

d by

co

ntam

inat

ed

surf

ace

wat

er

Mod

erat

e/

For i

mpa

ct

ratin

g se

e A

nnex

1

Prov

ide

supp

ort

to p

ipes

at

chan

nel/d

rain

cr

ossi

ngs a

nd

use

appr

opria

te

pipe

mat

eria

l co

nnec

tions

Non

-app

rove

d pi

pe m

ater

ials

; pi

pes

unsu

ppor

ted

Pipe

s uns

uppo

rted,

no

col

lars

to su

ppor

t en

try in

to

chan

nel/d

rain

Sani

tary

in

spec

tion,

tu

rbid

ity,

chlo

rine

resi

dual

See

anne

x 2:

Pr

imar

y -

mon

thly

Se

cond

ary

- qu

arte

rly

Terti

ary

(sam

ple)

Ope

ratin

g st

aff

Prov

ide

supp

orts

to

pipe

s, re

plac

e un

appr

oved

pi

pe m

ater

ials

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Con

tam

inat

ion

ente

rs d

istri

butio

n sy

stem

from

m

ajor

inst

itutio

ns

Wat

er fl

ows f

rom

in

tern

al in

stitu

tion

dist

ribut

ion

syst

em in

to m

ains

su

pply

due

to

redu

ced

pres

sure

be

caus

e of

in

term

itten

ce o

r tra

nsie

nt p

ress

ure

fluct

uatio

ns

Mod

erat

e/

For i

mpa

ct

ratin

g se

e A

nnex

1

Non

-ret

urn

valv

es (N

RV

) on

con

nect

ion

to su

pply

mai

n.

Inst

itutio

nal

wat

er q

ualit

y m

anag

emen

t pl

an a

ppro

ved

by th

e ut

ility

Non

-ret

urn

valv

es

func

tion

corr

ectly

an

d w

ater

qua

lity

man

agem

ent p

lan

deve

lope

d an

d fo

llow

ed

Non

-ret

urn

valv

e

abse

nt/fa

ulty

A

bsen

ce o

f a w

ater

qu

ality

man

agem

ent

plan

Sani

tary

in

spec

tion;

tu

rbid

ity,

chlo

rine

resi

dual

; In

stitu

tion

WSP

by

audi

t

Mon

thly

(N

RV

); an

nual

(p

lan

audi

t)

Ope

ratin

g st

aff (

NR

V)

WQ

CD

(a

udit)

Ensu

re a

ll re

pair

mad

e to

non

-re

turn

val

ves

(NR

V) a

nd

plan

s dev

elop

ed

and

appr

oved

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

Aud

it (W

QC

D)

Mic

robi

al

cont

amin

atio

n fr

om c

ross

-co

nnec

tions

to

sew

er sy

stem

Sew

ers a

nd w

ater

su

pply

mai

ns

plac

ed to

o cl

ose

to

toge

ther

or s

ewer

lie

s abo

ve th

e m

ain.

Mod

erat

e/

For i

mpa

ct

ratin

g se

e A

nnex

3 (r

isk

map

)

Cut

-off

wal

ls;

posi

tive

hydr

osta

tic

pres

sure

in

mai

ns; l

eak

repa

ir;

emer

genc

y di

sinf

ectio

n pr

ogra

mm

e

Syst

ems d

esig

ned

to p

reve

nt c

ross

-co

nnec

tion

unde

r al

l circ

umst

ance

Sudd

en c

hlor

ine

loss

, lea

kage

in

area

s clo

se to

sew

ers

Ris

k as

sess

men

t; le

akag

e da

ta;

chlo

rine

See

anne

x 2:

Pr

imar

y -

mon

thly

Se

cond

ary

- qu

arte

rly

Terti

ary

(sam

ple)

Ope

ratin

g st

aff

Rep

air a

nd

reha

bilit

atio

n pl

an in

pla

ce fo

r w

ater

supp

ly

and

sew

ers

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

Aud

it (W

QC

D)

Mic

robi

al

cont

amin

atio

n fr

om fa

ecal

ly-

cont

amin

ated

so

ils

Ingr

ess o

f co

ntam

inat

ed

wat

er fr

om so

il co

ntai

ning

pa

thog

ens

Like

ly/

For i

mpa

ct

ratin

g se

e A

nnex

3 (r

isk

map

)

Leak

age,

co

ntro

l, po

sitiv

e hy

dros

tatic

pr

essu

re;

resi

dual

di

sinf

ectio

n

Low

leve

ls o

f le

akag

e in

are

as

with

on-

site

sa

nita

tion;

po

sitiv

e hy

dros

tatic

pr

essu

re,

prot

ectiv

e tre

nch

for m

ains

Sudd

en lo

ss o

f ch

lorin

e, in

crea

se in

tu

rbid

ity, l

eak

dete

ctio

n

Chl

orin

e,

turb

idity

, le

akag

e da

ta

See

anne

x 2:

Pr

imar

y -

mon

thly

Se

cond

ary

- qu

arte

rly

Terti

ary

(sam

ple)

Ope

ratin

g st

aff

Rep

air a

nd

reha

bilit

atio

n pl

an in

pla

ce

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

Aud

it (W

QC

D)

Mic

robi

al

cont

amin

atio

n in

trodu

ced

durin

g re

pairs

on

dist

ribut

ion

syst

em

Poor

hyg

iene

in

repa

ir w

ork

allo

ws

cont

amin

atio

n to

en

ter i

nto

the

syst

em

Unl

ikel

y/

Cat

astro

phic

H

ygie

ne c

ode

of

prac

tice

for

repa

irs (s

ee

man

ual o

f goo

d pr

actic

e)

Hyg

iene

cod

e de

velo

ped,

av

aila

ble

to a

ll st

aff a

nd fo

llow

ed

Evid

ence

that

hy

gien

e co

de n

ot

follo

wed

Turb

idity

C

hlor

ine

resi

dual

s Si

te

insp

ectio

n

Dur

ing

and

finis

h of

re

pair

Ope

ratin

g st

aff

Trai

n st

aff i

n hy

gien

e co

de

for r

epai

r wor

k

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e C

lost

ridi

a pe

rfri

ngen

s Sa

nita

ry in

spec

tion

(WQ

CD

) B

iofil

m

slou

ghin

g in

to

drin

king

wat

er

Bio

film

dev

elop

s an

d la

ck o

f co

ntro

l stra

tegy

. H

ydra

ulic

cha

nges

le

ad to

slou

ghin

g

Mod

erat

e/

min

or

Con

trol o

f bi

ofilm

thro

ugh

chlo

rinat

ion,

us

e of

low

-ad

here

nce

mat

eria

ls, l

imit

pote

ntia

l for

su

rges

and

w

ater

ham

mer

Littl

e bi

ofilm

de

velo

ped

and

limite

d ris

k of

sl

ough

ing

Incr

ease

s in

turb

idity

, chl

orin

e lo

ss, c

hang

es in

co

lour

Chl

orin

e re

sidu

al,

colo

ur,

turb

idity

, od

our,

cust

omer

co

mpl

aint

s

See

anne

x 2:

Pr

imar

y -

annu

ally

Se

cond

ary

- bi

-ann

ually

Te

rtiar

y (s

ampl

e)

Ope

ratin

g st

aff

Rep

lace

men

t of

high

adh

eren

ce

pipe

mat

eria

l, op

timis

ed

treat

men

t, im

prov

e st

eady

st

ate

flow

Aer

omon

as

Cor

rosi

on c

oupo

ns

Rec

ord

audi

t (W

QC

D)

Mic

robi

al

cont

amin

atio

n at

ta

p

Are

a su

rrou

ndin

g ta

p an

d sa

nita

ry

cond

ition

of t

ap

allo

w e

ntry

of

cont

amin

ated

w

ater

Like

ly/

Mod

erat

e K

eep

area

clo

se

to ta

p cl

ean

and

mai

ntai

n in

tegr

ity o

f tap

an

d ris

er

No

was

te c

lose

to

tap;

tap

and

riser

in

goo

d co

nditi

on

Was

te c

lose

to ta

p,

dam

age

to ta

p or

ris

er

Sani

tary

in

spec

tion

Terti

ary

(sam

ple)

C

omm

unity

/ op

erat

ing

staf

f

Trai

ning

of

com

mun

ities

to

mai

ntai

n hy

gien

ic

surr

ound

ings

an

d re

pair

tap

and

riser

s

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n at

pi

pe

Con

tam

inat

ion

ente

rs th

roug

h ex

pose

d pi

pes

Like

ly/

Mod

erat

e (N

B: o

n-se

lling

and

pu

blic

taps

se

rve

man

y pe

ople

)

Kee

p al

l mai

ns

burie

d to

des

ign

dept

hs; p

rovi

de

secu

re d

esig

ns

for o

ver-

grou

nd

pipe

s

All

pipe

s bur

ied

or w

ith se

cure

pr

otec

tion

Pipe

s exp

osed

with

no

pro

tect

ion

Sani

tary

in

spec

tion

See

anne

x 2:

Pr

imar

y -

mon

thly

Se

cond

ary

- qu

arte

rly

Terti

ary

(sam

ple)

Ope

ratin

g st

aff

Ensu

re th

at

expo

sed

pipe

s ar

e co

vere

d

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n of

co

mm

unity

tank

s

Con

tam

inat

ion

of

poor

ly m

aint

aine

d ta

nks

Mod

erat

e/

Mod

erat

e C

lean

ing

regi

me

for t

anks

es

tabl

ishe

d

Tank

s cle

an a

nd

in g

ood

cond

ition

Ta

nks d

irty

or in

ne

ed o

f rep

air

Sani

tary

in

spec

tion

Perio

dic

Com

mun

ity/

oper

atin

g st

aff

` E.

coli

Fa

ecal

stre

ptoc

occi

. B

acte

rioph

age

Sani

tary

insp

ectio

n (W

QC

D)

Wat

er sa

fety

pla

n fo

r M

utun

go se

rvic

e re

serv

oir

Cri

tical

lim

its

Mon

itori

ng

Haz

ard

even

t C

ause

R

isk

Con

trol

m

easu

re

Targ

et

Act

ion

Wha

t W

hen

W

ho

Cor

rect

ive

actio

n V

erifi

catio

n

Mic

robi

al

cont

amin

atio

n of

se

rvic

e re

serv

oir

from

bird

s

Bird

s fae

ces e

nter

th

roug

h op

en

insp

ectio

n ha

tche

s

Mod

erat

e/

Cat

astro

phic

In

spec

tion

cove

rs re

mai

n in

pla

ce

Insp

ectio

n co

vers

lo

cked

in p

lace

In

spec

tion

cove

rs

not i

n pl

ace

or

unlo

cked

Sani

tary

in

spec

tion

Chl

orin

e re

sidu

al

Dai

ly

Ope

ratin

g st

aff

Rep

lace

in

spec

tion

cove

r an

d ch

eck

chlo

rine

cons

umpt

ion

E.co

li

Faec

al st

rept

ococ

ci.

Sani

tary

insp

ectio

n (W

QC

D)

Mic

robi

al

cont

amin

atio

n of

se

rvic

e re

serv

oir

from

bird

s and

an

imal

s

Bird

s and

ani

mal

fa

eces

ent

er

thro

ugh

dam

aged

or

cor

rode

d in

spec

tion

hatc

hes

Unl

ikel

y/

Cat

astro

phic

In

spec

tion

cove

rs a

nd

hatc

hes a

re k

ept

in g

ood

cond

ition

Insp

ectio

n ha

tche

s an

d co

vers

show

no

vis

ible

sign

of

dam

age

or

corr

osio

n

Vis

ible

sign

s of

dam

age

or c

orro

sion

Sa

nita

ry

insp

ectio

n M

onth

ly

Ope

ratin

g st

aff

Rep

lace

da

mag

ed o

r co

rrod

ed c

over

s an

d ha

tche

s

Insp

ectio

n (W

QC

D)

Mic

robi

al

cont

amin

atio

n of

se

rvic

e re

serv

oir

from

ani

mal

s

Rod

ents

or

amph

ibia

ns e

nter

se

rvic

e re

serv

oir

thro

ugh

vent

s be

caus

e m

esh

dam

aged

Mod

erat

e/

Min

or

Ven

t mes

h in

pl

ace

V

ent m

esh

in

good

con

ditio

n M

esh

show

s vis

ible

si

gns o

f dam

age

Sani

tary

in

spec

tion

Wee

kly

Ope

ratio

ns

staf

f R

epai

r and

re

plac

e da

mag

ed v

ents

.

E.co

li

Faec

al st

rept

ococ

ci.

Sani

tary

insp

ectio

n (W

QC

D)

Mic

robi

al

cont

amin

atio

n of

w

ater

by

bird

s an

d an

imal

s

Con

tam

inat

ed

wat

er b

uild

s up

on

roof

of t

ank

beca

use

of p

oor

drai

nage

and

in

unda

tes

insp

ectio

n co

vers

Mod

erat

e/

Maj

or

Roo

f gut

ters

for

easy

dra

inag

e of

ra

inw

ater

Gut

ters

free

of

debr

is

Gut

ters

blo

cked

, st

art o

f rai

ny se

ason

Sa

nita

ry

insp

ectio

n M

onth

ly

Ope

ratio

ns

staf

f C

lear

gut

ters

E.

coli

Fa

ecal

stre

ptoc

occi

. Sa

nita

ry in

spec

tion

(WQ

CD

)

Ani

mal

and

bird

fa

ecal

A

nim

al a

nd b

ird

faec

al m

ater

ial

build

s up

on ro

of

of se

rvic

e re

serv

oir

Like

ly/

Mod

erat

e Tr

ees d

o no

t ov

erha

ng th

e re

serv

oir a

nd

roof

s kep

t cle

an

Tree

bra

nche

s 2m

fr

om re

serv

oir

roof

; roo

f cle

an

Tree

s with

in 0

.5m

of

roof

; roo

f vis

ibly

di

rty

Sani

tary

in

spec

tion

Mon

thly

O

pera

ting

staf

f C

ut b

ack

tree

bran

ches

and

cl

ean

roof

E.co

li

Faec

al st

rept

ococ

ci.

Sani

tary

insp

ectio

n (W

QC

D)

Ingr

ess o

f co

ntam

inat

ion

at

inle

t val

ve

Inun

datio

n of

inle

t va

lve

of su

rfac

e w

ater

and

Mod

erat

e/

Maj

or

Goo

d dr

aina

ge

in v

alve

box

; co

vers

on

valv

e bo

x; v

alve

pa

ckin

g in

goo

d co

nditi

on

Val

ve b

oxes

co

vere

d an

d do

no

t hav

e st

andi

ng

wat

er o

r org

anic

m

ater

ial i

n ba

se;

pack

ing

does

not

le

ak

Cov

er o

ut o

f pla

ce,

sign

s of w

ater

or

mat

eria

l bui

ld-u

p;

pack

ing

show

s vi

sibl

e si

gns o

f da

mag

e

Sani

tary

in

spec

tion;

w

asho

ut d

rain

te

sts

Mon

thly

O

pera

ting

staf

f C

lean

val

ve b

ox

and

repl

ace

cove

r; cl

ear

was

hout

dra

in;

repl

ace

pack

ing

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Ingr

ess o

f co

ntam

inat

ion

at

outle

t/was

hout

va

lve

Val

ve is

inun

date

d by

surf

ace

wat

er

or w

aste

wat

er

from

rese

rvoi

r

Alm

ost

certa

in/

Maj

or

Effe

ctiv

e w

asho

ut d

rain

s;

cove

red

valv

e bo

x; g

ood

qual

ity v

alve

pa

ckin

g

Val

ve b

ox

cove

red

and

no

visi

ble

sign

s or

wat

er o

r was

te

mat

ter i

n bo

x;

was

hout

dra

in

func

tiona

l; pa

ckin

g in

goo

d co

nditi

on

Dra

inag

e ar

ound

bo

x bl

ocke

d or

da

mag

ed; w

asho

ut

drai

n bl

ocke

d; w

ater

or

was

te b

uild

-up

in

valv

e bo

x; p

acki

ng

show

ing

sign

s of

wea

r

Sani

tary

in

spec

tion;

w

asho

ut d

rain

te

st

Mon

thly

(SI)

A

nnua

l (dr

ain

test

)

Ope

ratin

g st

aff

Mak

e su

re a

ll bo

xes h

ave

was

hout

dra

in

that

is je

tted

as

part

of re

gula

r m

aint

enan

ce;

rout

ine

pack

ing

repl

acem

ent

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n fr

om b

iofil

m o

r se

dim

ent

Bio

film

slou

ghs

off o

r sed

imen

t is

dist

urbe

d.

Like

ly/

Min

or

Reg

ular

cl

eani

ng o

f se

rvic

e re

serv

oir,

drai

n-do

wn

of

rese

rvoi

r and

cl

ear s

edim

ent

Inte

rior o

f re

serv

oir i

s cle

an

and

sedi

men

t is

min

imis

ed a

nd

undi

stur

bed

Bio

film

dev

elop

s, in

crea

se in

chl

orin

e co

nsum

ptio

n

Sani

tary

in

spec

tion,

ch

lorin

e re

sidu

als,

turb

idity

Mon

thly

O

pera

ting

staf

f Ta

ke re

serv

oir

off-

line

and

clea

nd

Aer

omon

as

Bio

film

cou

pons

Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n at

va

lve

V14

87

Blo

ck M

ap 2

336

Ingr

ess o

f co

ntam

inat

ed

wat

er a

t the

val

ve

box

Like

ly/

Min

or

Goo

d ex

tern

al

and

inte

rnal

dr

aina

ge;

stru

ctur

al

inte

grity

of b

ox;

valv

e pa

ckin

g in

go

od c

ondi

tion

Inte

rnal

and

ex

tern

al d

rain

s in

good

con

ditio

n;

valv

e bo

x do

es

not r

equi

re

repa

irs; v

ale

pack

ing

does

not

le

ak

Evid

ence

of d

rain

bl

ocka

ge, s

igns

of

dam

age

to d

rain

s;

sign

s of d

amag

e to

bo

x; v

alve

pac

king

le

akin

g

Sani

tary

in

spec

tion,

tu

rbid

ity,

chlo

rine

resi

dual

Mon

thly

O

pera

ting

staf

f En

sure

dra

ins

are

clea

red

and

any

repa

irs

mad

e to

dra

ins

and

valv

e bo

x;

repl

ace

valv

e pa

ckin

g

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n at

va

lve

V18

71/2

B

lock

Map

243

33

Ingr

ess o

f co

ntam

inat

ed

wat

er a

t the

val

ve

box

Like

ly/

Min

or

Goo

d ex

tern

al

and

inte

rnal

dr

aina

ge;

stru

ctur

al

inte

grity

of b

ox;

valv

e pa

ckin

g in

go

od c

ondi

tion

Inte

rnal

and

ex

tern

al d

rain

s in

good

con

ditio

n;

valv

e bo

x do

es

not r

equi

re

repa

irs; v

ale

pack

ing

does

not

le

ak

Evid

ence

of d

rain

bl

ocka

ge, s

igns

of

dam

age

to d

rain

s;

sign

s of d

amag

e to

bo

x; v

alve

pac

king

le

akin

g

Sani

tary

in

spec

tion,

tu

rbid

ity,

chlo

rine

resi

dual

Mon

thly

O

pera

ting

staf

f En

sure

dra

ins

are

clea

red

and

repa

irs m

ade

to

drai

ns a

nd v

alve

bo

x; re

plac

e va

lve

pack

ing

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n at

va

lve

V18

88

Blo

ck M

ap 2

631

Ingr

ess o

f co

ntam

inat

ed

wat

er a

t the

val

ve

box

Like

ly/

Min

or

Goo

d ex

tern

al

and

inte

rnal

dr

aina

ge;

stru

ctur

al

inte

grity

of b

ox;

valv

e pa

ckin

g in

go

od c

ondi

tion

Inte

rnal

and

ex

tern

al d

rain

s in

good

con

ditio

n;

valv

e bo

x do

es

not r

equi

re

repa

irs; v

ale

pack

ing

does

not

le

ak

Evid

ence

of d

rain

bl

ocka

ge, s

igns

of

dam

age

to d

rain

s;

sign

s of d

amag

e to

bo

x; v

alve

pac

king

le

akin

g

Sani

tary

in

spec

tion,

tu

rbid

ity,

chlo

rine

resi

dual

Six-

mon

thly

O

pera

ting

staf

f En

sure

dra

ins

are

clea

red

and

repa

irs m

ade

to

drai

ns a

nd v

alve

bo

x; re

plac

e va

lve

pack

ing

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n at

M

buya

Boo

ster

va

lve

VO

95

Blo

ck M

ap 2

130

Ingr

ess o

f co

ntam

inat

ed

wat

er th

roug

h hy

dran

t val

ve

Mod

erat

e/

Min

or

Goo

d in

tern

al

and

exte

rnal

dr

aina

ge; v

alve

bo

x in

tegr

ity;

valv

e bo

x ke

pt

clea

n

Dra

in c

lear

; val

ve

box

in g

ood

cond

ition

and

cl

ear o

f any

deb

ris

Evid

ence

of d

rain

bl

ocka

ge, s

igns

of

dam

age

to b

ox;

valv

e pa

ckin

g le

akin

g; o

rgan

ic

mat

eria

l bui

lt-up

Sani

tary

in

spec

tion,

tu

rbid

ity,

chlo

rine

resi

dual

Mon

thly

O

pera

ting

staf

f En

sure

dra

ins

are

clea

red

and

repa

irs m

ade

to

drai

ns a

nd v

alve

bo

x; re

plac

e va

lve

pack

ing

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n in

di

strib

utio

n at

ro

ad c

ross

ings

Con

tam

inat

ed

wat

er e

nter

s th

roug

h da

mag

ed

pipe

s

Mod

erat

e/

For i

mpa

ct

ratin

g se

e A

nnex

1

Pipe

s bur

ied

at

dept

h on

ro

adsi

de, c

olla

rs

rein

forc

e jo

ints

Pipe

s bur

ied,

no

sign

of l

eaks

Pi

pes e

xpos

ed; s

igns

of

leak

s Sa

nita

ry

insp

ectio

n,

turb

idity

, ch

lorin

e re

sidu

al

See

anne

x 2:

Pr

imar

y -

mon

thly

Se

cond

ary

- qu

arte

rly

Terti

ary

(sam

ple)

Ope

ratin

g st

aff

Rep

air l

eaks

, bu

ry p

ipes

and

re

info

rce

join

ts

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n in

di

strib

utio

n at

ch

anne

l/dra

in

cros

sing

Con

tam

inat

ed

wat

er e

nter

s whe

n da

mag

ed p

ipe

inun

date

d by

co

ntam

inat

ed

surf

ace

wat

er

Mod

erat

e/

For i

mpa

ct

ratin

g se

e A

nnex

1

Prov

ide

supp

ort

to p

ipes

at

chan

nel/d

rain

cr

ossi

ngs a

nd

use

appr

opria

te

pipe

mat

eria

l co

nnec

tions

Non

-app

rove

d pi

pe m

ater

ials

; pi

pes

unsu

ppor

ted

Pipe

s uns

uppo

rted,

no

col

lars

to su

ppor

t en

try in

to

chan

nel/d

rain

Sani

tary

in

spec

tion,

tu

rbid

ity,

chlo

rine

resi

dual

See

anne

x 2:

Pr

imar

y -

mon

thly

Se

cond

ary

- qu

arte

rly

Terti

ary

(sam

ple)

Ope

ratin

g st

aff

Prov

ide

supp

orts

to

pipe

s, re

plac

e un

appr

oved

pi

pe m

ater

ials

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Con

tam

inat

ion

ente

rs d

istri

butio

n sy

stem

from

m

ajor

inst

itutio

ns

(see

Ann

ex fo

r lis

ting)

Wat

er fl

ows f

rom

in

tern

al in

stitu

tion

dist

ribut

ion

syst

em in

to m

ains

su

pply

due

to

redu

ced

pres

sure

be

caus

e of

in

term

itten

ce o

r tra

nsie

nt p

ress

ure

fluct

uatio

ns

Mod

erat

e/

For i

mpa

ct

ratin

g se

e A

nnex

1

Non

-ret

urn

valv

es (N

RV

) on

con

nect

ion

to su

pply

mai

n.

Inst

itutio

nal

wat

er q

ualit

y m

anag

emen

t pl

an a

ppro

ved

by th

e ut

ility

Non

-ret

urn

valv

es

func

tion

corr

ectly

an

d w

ater

qua

lity

man

agem

ent p

lan

deve

lope

d an

d fo

llow

ed

Non

-ret

urn

valv

e

abse

nt/fa

ulty

A

bsen

ce o

f a w

ater

qu

ality

man

agem

ent

plan

Sani

tary

in

spec

tion;

tu

rbid

ity,

chlo

rine

resi

dual

; In

stitu

tion

WSP

by

audi

t

Mon

thly

(N

RV

); an

nual

(p

lan

audi

t)

Ope

ratin

g st

aff (

NR

V)

WQ

CD

(a

udit)

Ensu

re a

ll re

pair

mad

e to

non

-re

turn

val

ves

(NR

V) a

nd

plan

s dev

elop

ed

and

appr

oved

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

Aud

it (W

QC

D)

Mic

robi

al

cont

amin

atio

n fr

om c

ross

-co

nnec

tions

to

sew

er sy

stem

Sew

ers a

nd w

ater

su

pply

mai

ns

plac

ed to

o cl

ose

to

toge

ther

or s

ewer

lie

s abo

ve th

e m

ain.

Mod

erat

e/

For i

mpa

ct

ratin

g se

e A

nnex

3 (r

isk

map

)

Cut

-off

wal

ls;

posi

tive

hydr

osta

tic

pres

sure

in

mai

ns; l

eak

repa

ir;

emer

genc

y di

sinf

ectio

n pr

ogra

mm

e

Syst

ems d

esig

ned

to p

reve

nt c

ross

-co

nnec

tion

unde

r al

l circ

umst

ance

Sudd

en c

hlor

ine

loss

, lea

kage

in

area

s clo

se to

sew

ers

Ris

k as

sess

men

t; le

akag

e da

ta;

chlo

rine

See

anne

x 2:

Pr

imar

y -

mon

thly

Se

cond

ary

- qu

arte

rly

Terti

ary

(sam

ple)

Ope

ratin

g st

aff

Rep

air a

nd

reha

bilit

atio

n pl

an in

pla

ce fo

r w

ater

supp

ly

and

sew

ers

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

Aud

it (W

QC

D)

Mic

robi

al

cont

amin

atio

n fr

om fa

ecal

ly-

cont

amin

ated

so

ils

Ingr

ess o

f co

ntam

inat

ed

wat

er fr

om so

il co

ntai

ning

pa

thog

ens

Like

ly/

For i

mpa

ct

ratin

g se

e A

nnex

3 (r

isk

map

)

Leak

age,

co

ntro

l, po

sitiv

e hy

dros

tatic

pr

essu

re;

resi

dual

di

sinf

ectio

n

Low

leve

ls o

f le

akag

e in

are

as

with

on-

site

sa

nita

tion;

po

sitiv

e hy

dros

tatic

pr

essu

re,

prot

ectiv

e tre

nch

for m

ains

Sudd

en lo

ss o

f ch

lorin

e, in

crea

se in

tu

rbid

ity, l

eak

dete

ctio

n

Chl

orin

e,

turb

idity

, le

akag

e da

ta

See

anne

x 2:

Pr

imar

y -

mon

thly

Se

cond

ary

- qu

arte

rly

Terti

ary

(sam

ple)

Ope

ratin

g st

aff

Rep

air a

nd

reha

bilit

atio

n pl

an in

pla

ce

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

Aud

it (W

QC

D)

Mic

robi

al

cont

amin

atio

n in

trodu

ced

durin

g re

pairs

on

dist

ribut

ion

syst

em

Poor

hyg

iene

in

repa

ir w

ork

allo

ws

cont

amin

atio

n to

en

ter i

nto

the

syst

em

Unl

ikel

y/

Cat

astro

phic

H

ygie

ne c

ode

of

prac

tice

for

repa

irs (s

ee

man

ual o

f goo

d pr

actic

e)

Hyg

iene

cod

e de

velo

ped,

av

aila

ble

to a

ll st

aff a

nd fo

llow

ed

Evid

ence

that

hy

gien

e co

de n

ot

follo

wed

Turb

idity

C

hlor

ine

resi

dual

s Si

te

insp

ectio

n

Dur

ing

and

finis

h of

re

pair

Ope

ratin

g st

aff

Trai

n st

aff i

n hy

gien

e co

de

for r

epai

r wor

k

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e C

lost

ridi

a pe

rfri

ngen

s Sa

nita

ry in

spec

tion

(WQ

CD

) B

iofil

m

slou

ghin

g in

to

drin

king

wat

er

Bio

film

dev

elop

s an

d la

ck o

f co

ntro

l stra

tegy

. H

ydra

ulic

cha

nges

le

ad to

slou

ghin

g

Mod

erat

e/

min

or

Con

trol o

f bi

ofilm

thro

ugh

chlo

rinat

ion,

us

e of

low

-ad

here

nce

mat

eria

ls, l

imit

pote

ntia

l for

su

rges

and

w

ater

ham

mer

Littl

e bi

ofilm

de

velo

ped

and

limite

d ris

k of

sl

ough

ing

Incr

ease

s in

turb

idity

, chl

orin

e lo

ss, c

hang

es in

co

lour

Chl

orin

e re

sidu

al,

colo

ur,

turb

idity

, od

our,

cust

omer

co

mpl

aint

s

See

anne

x 2:

Pr

imar

y -

annu

ally

Se

cond

ary

- bi

-ann

ually

Te

rtiar

y (s

ampl

e)

Ope

ratin

g st

aff

Rep

lace

men

t of

high

adh

eren

ce

pipe

mat

eria

l, op

timis

ed

treat

men

t, im

prov

e st

eady

st

ate

flow

Aer

omon

as

Cor

rosi

on c

oupo

ns

Rec

ord

audi

t (W

QC

D)

Mic

robi

al

cont

amin

atio

n at

ta

p

Are

a su

rrou

ndin

g ta

p an

d sa

nita

ry

cond

ition

of t

ap

allo

w e

ntry

of

cont

amin

ated

w

ater

Like

ly/

Mod

erat

e K

eep

area

clo

se

to ta

p cl

ean

and

mai

ntai

n in

tegr

ity o

f tap

an

d ris

er

No

was

te c

lose

to

tap;

tap

and

riser

in

goo

d co

nditi

on

Was

te c

lose

to ta

p,

dam

age

to ta

p or

ris

er

Sani

tary

in

spec

tion

Terti

ary

(sam

ple)

C

omm

unity

/ op

erat

ing

staf

f

Trai

ning

of

com

mun

ities

to

mai

ntai

n hy

gien

ic

surr

ound

ings

an

d re

pair

tap

and

riser

s

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n at

pi

pe

Con

tam

inat

ion

ente

rs th

roug

h ex

pose

d pi

pes

Like

ly/

Mod

erat

e (N

B: o

n-se

lling

and

pu

blic

taps

se

rve

man

y pe

ople

)

Kee

p al

l mai

ns

burie

d to

des

ign

dept

hs; p

rovi

de

secu

re d

esig

ns

for o

ver-

grou

nd

pipe

s

All

pipe

s bur

ied

or w

ith se

cure

pr

otec

tion

Pipe

s exp

osed

with

no

pro

tect

ion

Sani

tary

in

spec

tion

See

anne

x 2:

Pr

imar

y -

mon

thly

Se

cond

ary

- qu

arte

rly

Terti

ary

(sam

ple)

Ope

ratin

g st

aff

Ensu

re th

at

expo

sed

pipe

s ar

e co

vere

d

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n of

co

mm

unity

tank

s

Con

tam

inat

ion

of

poor

ly m

aint

aine

d ta

nks

Mod

erat

e/

Mod

erat

e C

lean

ing

regi

me

for t

anks

es

tabl

ishe

d

Tank

s cle

an a

nd

in g

ood

cond

ition

Ta

nks d

irty

or in

ne

ed o

f rep

air

Sani

tary

in

spec

tion

Perio

dic

Com

mun

ity/

oper

atin

g st

aff

` E.

coli

Fa

ecal

stre

ptoc

occi

. B

acte

rioph

age

Sani

tary

insp

ectio

n (W

QC

D)

Gun

Hill

serv

ice

rese

rvoi

r ar

ea: w

ater

safe

ty p

lan

C

ritic

al li

mits

M

onito

ring

H

azar

d ev

ent

Cau

se

Ris

k C

ontr

ol

mea

sure

Ta

rget

A

ctio

n W

hat

Whe

n

Who

C

orre

ctiv

e ac

tion

Ver

ifica

tion

Mic

robi

al

cont

amin

atio

n of

se

rvic

e re

serv

oir

from

bird

s

Bird

s fae

ces e

nter

th

roug

h ve

nts

beca

use

cove

rs

disl

odge

d

Like

ly/

Cat

astro

phic

V

ent c

over

s re

mai

n in

pla

ce

Ven

ts c

over

ed

50%

of v

ent

supp

ort s

truts

are

da

mag

ed

Sani

tary

in

spec

tion

Wee

kly

Ope

ratio

ns

staf

f R

epai

r and

re

plac

e da

mag

ed v

ents

.

E.co

li

Faec

al st

rept

ococ

ci.

Sani

tary

insp

ectio

n (W

QC

D)

Mic

robi

al

cont

amin

atio

n of

se

rvic

e re

serv

oir

from

bird

s

Bird

s fae

ces e

nter

th

roug

h op

en

insp

ectio

n ha

tche

s

Like

ly/

Cat

astro

phic

In

spec

tion

cove

rs re

mai

n in

pla

ce

Insp

ectio

n co

vers

lo

cked

in p

lace

In

spec

tion

cove

rs

not i

n pl

ace

or

unlo

cked

Sani

tary

in

spec

tion

Chl

orin

e re

sidu

al

Dai

ly

Ope

ratin

g st

aff

Rep

lace

in

spec

tion

cove

r an

d ch

eck

chlo

rine

cons

umpt

ion

E.co

li

Faec

al st

rept

ococ

ci.

Sani

tary

insp

ectio

n (W

QC

D)

Mic

robi

al

cont

amin

atio

n of

se

rvic

e re

serv

oir

from

bird

s and

an

imal

s

Bird

s and

ani

mal

fa

eces

ent

er

thro

ugh

dam

aged

or

cor

rode

d in

spec

tion

hatc

hes

Unl

ikel

y/

Cat

astro

phic

In

spec

tion

cove

rs a

nd

hatc

hes a

re k

ept

in g

ood

cond

ition

Insp

ectio

n ha

tche

s an

d co

vers

show

no

visi

ble

sign

of

dam

age

or

corr

osio

n

Vis

ible

sign

s of

dam

age

or

corr

osio

n

Sani

tary

in

spec

tion

Qua

rterly

/ an

nual

ly

Ope

ratin

g st

aff

Rep

lace

da

mag

ed o

r co

rrod

ed c

over

s an

d ha

tche

s

Insp

ectio

n (W

QC

D)

Mic

robi

al

cont

amin

atio

n of

se

rvic

e re

serv

oir

from

ani

mal

s

Rod

ents

or

amph

ibia

ns e

nter

se

rvic

e re

serv

oir

thro

ugh

vent

s be

caus

e co

vers

da

mag

ed

Mod

erat

e/

Min

or

Ven

t cov

ers

rem

ain

in p

lace

V

ents

cov

ered

50

% o

f ven

t su

ppor

t stru

ts a

re

dam

aged

Sani

tary

in

spec

tion

Wee

kly

Ope

ratio

ns

staf

f R

epai

r and

re

plac

e da

mag

ed v

ents

.

E.co

li

Faec

al st

rept

ococ

ci.

Sani

tary

insp

ectio

n (W

QC

D)

Ingr

ess o

f co

ntam

inat

ed

wat

er th

roug

h se

rvic

e re

serv

oir

wal

ls

Shal

low

gr

ound

wat

er

ingr

ess t

hrou

gh

crac

ks in

serv

ice

rese

rvoi

r wal

ls

Mod

erat

e/

Maj

or

Stru

ctur

al

inte

grity

and

dr

aina

ge

Tank

stru

ctur

e so

und

with

no

crac

ks; d

rain

age

chan

nels

in g

ood

cond

ition

Dra

inag

e ch

anne

ls

bloc

ked;

vis

ible

si

gns o

f cra

cks

deve

lop

in ta

nk

stru

ctur

e

Sani

tary

in

spec

tion

Mon

thly

O

pera

tions

st

aff

Cle

ar d

rain

age

chan

nels

. Tak

e ta

nks o

ff-li

ne

for r

epai

rs.

Flus

h ta

nk a

nd

dist

ribut

ion

befo

re re

-co

mm

issi

onin

g

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Ingr

ess o

f co

ntam

inat

ed

wat

er th

roug

h ro

of d

amag

e

Dam

age

by tr

ees

plan

ted

on

rese

rvoi

r roo

f or

gras

s roo

ts fr

om

larg

e tu

ssoc

ks;

inun

datio

n by

su

rfac

e w

ater

of

rese

rvoi

r roo

f

Like

ly/

Cat

astro

phic

St

ruct

ural

in

tegr

ity o

f ro

of; c

ontro

l tre

e gr

owth

No

trees

on

rese

rvoi

r roo

f and

no

cra

cks i

n ro

of

Sign

s of t

ree

grow

th o

r cr

ack

deve

lopm

ent

Sani

tary

in

spec

tion

Ann

ually

O

pera

ting

staf

f K

eep

gras

s on

rese

rvoi

r wel

l m

aint

aine

d an

d cl

ose

crop

ped

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Ingr

ess o

f co

ntam

inat

ion

at

inle

t val

ve

Inun

datio

n of

inle

t va

lve

of su

rfac

e w

ater

or i

ngre

ss o

f st

agna

nt w

ater

th

roug

h le

akin

g va

lve

pack

ing

Mod

erat

e/

Maj

or

Goo

d dr

aina

ge

in v

alve

box

; co

vers

on

valv

e bo

x; v

alve

pa

ckin

g in

goo

d co

nditi

on

Val

ve b

oxes

co

vere

d an

d do

not

ha

ve st

andi

ng

wat

er o

r org

anic

m

ater

ial i

n ba

se;

pack

ing

does

not

le

ak

Cov

er o

ut o

f pla

ce,

sign

s of w

ater

or

mat

eria

l bui

ld-u

p;

pack

ing

show

s vi

sibl

e si

gns o

f da

mag

e

Sani

tary

in

spec

tion;

w

asho

ut d

rain

te

sts

Mon

thly

O

pera

ting

staf

f C

lean

val

ve b

ox

and

repl

ace

cove

r; cl

ear

was

hout

dra

in;

repl

ace

pack

ing

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Ingr

ess o

f co

ntam

inat

ion

at

outle

t/was

hout

va

lve

Val

ve is

inun

date

d by

surf

ace

wat

er

or w

aste

wat

er

from

rese

rvoi

r

Alm

ost

certa

in/

Maj

or

Effe

ctiv

e w

asho

ut d

rain

s;

cove

red

valv

e bo

x; g

ood

qual

ity v

alve

pa

ckin

g

Val

ve b

ox c

over

ed

and

no v

isib

le si

gns

or w

ater

or w

aste

m

atte

r in

box;

w

asho

ut d

rain

fu

nctio

nal;

pack

ing

in g

ood

cond

ition

Dra

inag

e ar

ound

bo

x bl

ocke

d or

da

mag

ed; w

asho

ut

drai

n bl

ocke

d;

wat

er o

r was

te

build

-up

in v

alve

bo

x; p

acki

ng

show

ing

sign

s of

wea

r

Sani

tary

in

spec

tion;

w

asho

ut d

rain

te

st

Mon

thly

(SI)

A

nnua

l (dr

ain

test

)

Ope

ratin

g st

aff

Mak

e su

re a

ll bo

xes h

ave

was

hout

dra

in

that

is je

tted

as

part

of re

gula

r m

aint

enan

ce;

rout

ine

pack

ing

repl

acem

ent

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n fr

om b

iofil

m o

r se

dim

ent

Bio

film

slou

ghs

off o

r sed

imen

t is

dist

urbe

d.

Like

ly/

Min

or

Reg

ular

cl

eani

ng o

f se

rvic

e re

serv

oir,

drai

n-do

wn

of

rese

rvoi

r and

cl

ear s

edim

ent

Inte

rior o

f res

ervo

ir is

cle

an a

nd

sedi

men

t is

min

imis

ed a

nd

undi

stur

bed

Bio

film

dev

elop

s, in

crea

se in

chl

orin

e co

nsum

ptio

n

Sani

tary

in

spec

tion,

ch

lorin

e re

sidu

als,

turb

idity

Mon

thly

O

pera

ting

staf

f Ta

ke re

serv

oir

off-

line

and

clea

n

Aer

omon

as

Bio

film

cou

pons

Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n at

va

lve

V –

244

Ingr

ess o

f co

ntam

inat

ed

wat

er a

t the

val

ve

box

Like

ly/

Mod

erat

e G

ood

exte

rnal

an

d in

tern

al

drai

nage

; st

ruct

ural

in

tegr

ity o

f box

; va

lve

pack

ing

in

good

con

ditio

n

Inte

rnal

and

ex

tern

al d

rain

s in

good

con

ditio

n;

valv

e bo

x do

es n

ot

requ

ire re

pairs

; va

le p

acki

ng d

oes

not l

eak

Evid

ence

of d

rain

bl

ocka

ge, s

igns

of

dam

age

to d

rain

s;

sign

s of d

amag

e to

bo

x; v

alve

pac

king

le

akin

g

Sani

tary

in

spec

tion,

tu

rbid

ity,

chlo

rine

resi

dual

Mon

thly

O

pera

ting

staf

f En

sure

dra

ins

are

clea

red

and

any

repa

irs

mad

e to

dra

ins

and

valv

e bo

x;

repl

ace

valv

e pa

ckin

g

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n at

va

lve

V

391/

V79

6/V

-390

, B

lock

Map

202

3

Ingr

ess o

f co

ntam

inat

ed

wat

er a

t the

val

ve

box

Like

ly/

Mod

erat

e G

ood

exte

rnal

an

d in

tern

al

drai

nage

; st

ruct

ural

in

tegr

ity o

f box

; va

lve

pack

ing

in

good

con

ditio

n

Inte

rnal

and

ex

tern

al d

rain

s in

good

con

ditio

n;

valv

e bo

x do

es n

ot

requ

ire re

pairs

; va

le p

acki

ng d

oes

not l

eak

Evid

ence

of d

rain

bl

ocka

ge, s

igns

of

dam

age

to d

rain

s;

sign

s of d

amag

e to

bo

x; v

alve

pac

king

le

akin

g

Sani

tary

in

spec

tion,

tu

rbid

ity,

chlo

rine

resi

dual

Mon

thly

O

pera

ting

staf

f En

sure

dra

ins

are

clea

red

and

repa

irs m

ade

to

drai

ns a

nd v

alve

bo

x; re

plac

e va

lve

pack

ing

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n at

va

lve

-17

66/V

1765

B

lock

Map

271

3

Ingr

ess o

f co

ntam

inat

ed

wat

er a

t the

val

ve

box

Like

ly/

Mod

erat

e G

ood

exte

rnal

an

d in

tern

al

drai

nage

; st

ruct

ural

in

tegr

ity o

f box

; va

lve

pack

ing

in

good

con

ditio

n

Inte

rnal

and

ex

tern

al d

rain

s in

good

con

ditio

n;

valv

e bo

x do

es n

ot

requ

ire re

pairs

; va

le p

acki

ng d

oes

not l

eak

Evid

ence

of d

rain

bl

ocka

ge, s

igns

of

dam

age

to d

rain

s;

sign

s of d

amag

e to

bo

x; v

alve

pac

king

le

akin

g

Sani

tary

in

spec

tion,

tu

rbid

ity,

chlo

rine

resi

dual

Mon

thly

O

pera

ting

staf

f En

sure

dra

ins

are

clea

red

and

repa

irs m

ade

to

drai

ns a

nd v

alve

bo

x; re

plac

e va

lve

pack

ing

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n at

va

lve

V83

1 B

lock

Map

231

7

Ingr

ess o

f co

ntam

inat

ed

wat

er a

t the

val

ve

box

Like

ly/

Min

or

Goo

d ex

tern

al

and

inte

rnal

dr

aina

ge;

stru

ctur

al

inte

grity

of b

ox;

valv

e pa

ckin

g in

go

od c

ondi

tion

Inte

rnal

and

ex

tern

al d

rain

s in

good

con

ditio

n;

valv

e bo

x do

es n

ot

requ

ire re

pairs

; va

le p

acki

ng d

oes

not l

eak

Evid

ence

of d

rain

bl

ocka

ge, s

igns

of

dam

age

to d

rain

s;

sign

s of d

amag

e to

bo

x; v

alve

pac

king

le

akin

g

Sani

tary

in

spec

tion,

tu

rbid

ity,

chlo

rine

resi

dual

Mon

thly

O

pera

ting

staf

f En

sure

dra

ins

are

clea

red

and

repa

irs m

ade

to

drai

ns a

nd v

alve

bo

x; re

plac

e va

lve

pack

ing

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n at

va

lve

indu

stria

l ar

ea V

309

(Int

erco

nnec

tion

Hig

h/Lo

w le

vel)

Blo

ck M

ap 2

222

Ingr

ess o

f co

ntam

inat

ed

wat

er a

t the

val

ve

box

Like

ly/

Min

or

Goo

d ex

tern

al

and

inte

rnal

dr

aina

ge;

stru

ctur

al

inte

grity

of b

ox;

valv

e pa

ckin

g in

go

od c

ondi

tion

Inte

rnal

and

ex

tern

al d

rain

s in

good

con

ditio

n;

valv

e bo

x do

es n

ot

requ

ire re

pairs

; va

le p

acki

ng d

oes

not l

eak

Evid

ence

of d

rain

bl

ocka

ge, s

igns

of

dam

age

to d

rain

s;

sign

s of d

amag

e to

bo

x; v

alve

pac

king

le

akin

g

Sani

tary

in

spec

tion,

tu

rbid

ity,

chlo

rine

resi

dual

Mon

thly

O

pera

ting

staf

f En

sure

dra

ins

are

clea

red

and

repa

irs m

ade

to

drai

ns a

nd v

alve

bo

x; re

plac

e va

lve

pack

ing

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n at

va

lve

V49

7 B

lock

Map

222

5

Ingr

ess o

f co

ntam

inat

ed

wat

er a

t the

val

ve

box

Like

ly/

Min

or

Goo

d ex

tern

al

and

inte

rnal

dr

aina

ge;

stru

ctur

al

inte

grity

of b

ox;

valv

e pa

ckin

g in

go

od c

ondi

tion

Inte

rnal

and

ex

tern

al d

rain

s in

good

con

ditio

n;

valv

e bo

x do

es n

ot

requ

ire re

pairs

; va

le p

acki

ng d

oes

not l

eak

Evid

ence

of d

rain

bl

ocka

ge, s

igns

of

dam

age

to d

rain

s;

sign

s of d

amag

e to

bo

x; v

alve

pac

king

le

akin

g

Sani

tary

in

spec

tion,

tu

rbid

ity,

chlo

rine

resi

dual

Mon

thly

O

pera

ting

staf

f En

sure

dra

ins

are

clea

red

and

repa

irs m

ade

to

drai

ns a

nd v

alve

bo

x; re

plac

e va

lve

pack

ing

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n at

va

lve

V13

96/1

397/

1398

B

lock

Map

222

2

Ingr

ess o

f co

ntam

inat

ed

wat

er a

t the

val

ve

box

Like

ly/

Min

or

Goo

d ex

tern

al

and

inte

rnal

dr

aina

ge;

stru

ctur

al

inte

grity

of b

ox;

valv

e pa

ckin

g in

go

od c

ondi

tion

Inte

rnal

and

ex

tern

al d

rain

s in

good

con

ditio

n;

valv

e bo

x do

es n

ot

requ

ire re

pairs

; va

le p

acki

ng d

oes

not l

eak

Evid

ence

of d

rain

bl

ocka

ge, s

igns

of

dam

age

to d

rain

s;

sign

s of d

amag

e to

bo

x; v

alve

pac

king

le

akin

g

Sani

tary

in

spec

tion,

tu

rbid

ity,

chlo

rine

resi

dual

Mon

thly

O

pera

ting

staf

f En

sure

dra

ins

are

clea

red

and

repa

irs m

ade

to

drai

ns a

nd v

alve

bo

x; re

plac

e va

lve

pack

ing

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n at

va

lve

V83

1 B

lock

Map

231

7

Ingr

ess o

f co

ntam

inat

ed

wat

er a

t the

val

ve

box

Like

ly/

Min

or

Goo

d ex

tern

al

and

inte

rnal

dr

aina

ge;

stru

ctur

al

inte

grity

of b

ox;

valv

e pa

ckin

g in

go

od c

ondi

tion

Inte

rnal

and

ex

tern

al d

rain

s in

good

con

ditio

n;

valv

e bo

x do

es n

ot

requ

ire re

pairs

; va

le p

acki

ng d

oes

not l

eak

Evid

ence

of d

rain

bl

ocka

ge, s

igns

of

dam

age

to d

rain

s;

sign

s of d

amag

e to

bo

x; v

alve

pac

king

le

akin

g

Sani

tary

in

spec

tion,

tu

rbid

ity,

chlo

rine

resi

dual

Mon

thly

O

pera

ting

staf

f En

sure

dra

ins

are

clea

red

and

repa

irs m

ade

to

drai

ns a

nd v

alve

bo

x; re

plac

e va

lve

pack

ing

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n at

fir

e hy

dran

t fire

st

atio

n H

375

Blo

ck M

ap 2

318

Ingr

ess o

f co

ntam

inat

ed

wat

er th

roug

h hy

dran

t val

ve

Mod

erat

e/

Mod

erat

e G

ood

inte

rnal

an

d ex

tern

al

drai

nage

; val

ve

box

inte

grity

; va

lve

box

kept

cl

ean

Dra

in c

lear

; val

ve

box

in g

ood

cond

ition

and

cle

ar

of a

ny d

ebris

Evid

ence

of d

rain

bl

ocka

ge, s

igns

of

dam

age

to b

ox;

valv

e pa

ckin

g le

akin

g; o

rgan

ic

mat

eria

l bui

lt-up

Sani

tary

in

spec

tion,

tu

rbid

ity,

chlo

rine

resi

dual

Mon

thly

O

pera

ting

staf

f En

sure

dra

ins

are

clea

red

and

repa

irs m

ade

to

drai

ns a

nd v

alve

bo

x; re

plac

e va

lve

pack

ing

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n at

fir

e hy

dran

t H

127

Blo

ck M

ap 2

328

Ingr

ess o

f co

ntam

inat

ed

wat

er th

roug

h hy

dran

t val

ve

Mod

erat

e/

Min

or

Goo

d in

tern

al

and

exte

rnal

dr

aina

ge; v

alve

bo

x in

tegr

ity;

valv

e bo

x ke

pt

clea

n

Dra

in c

lear

; val

ve

box

in g

ood

cond

ition

and

cle

ar

of a

ny d

ebris

Evid

ence

of d

rain

bl

ocka

ge, s

igns

of

dam

age

to b

ox;

valv

e pa

ckin

g le

akin

g; o

rgan

ic

mat

eria

l bui

lt-up

Sani

tary

in

spec

tion,

tu

rbid

ity,

chlo

rine

resi

dual

Mon

thly

O

pera

ting

staf

f En

sure

dra

ins

are

clea

red

and

repa

irs m

ade

to

drai

ns a

nd v

alve

bo

x; re

plac

e va

lve

pack

ing

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n in

di

strib

utio

n at

ro

ad c

ross

ings

Con

tam

inat

ed

wat

er e

nter

s th

roug

h da

mag

ed

pipe

s

Mod

erat

e/

For i

mpa

ct

ratin

g se

e A

nnex

1

Pipe

s bur

ied

at

dept

h on

ro

adsi

de, c

olla

rs

rein

forc

e jo

ints

Pipe

s bur

ied,

no

sign

of l

eaks

Pi

pes e

xpos

ed;

sign

s of l

eaks

Sa

nita

ry

insp

ectio

n,

turb

idity

, ch

lorin

e re

sidu

al

See

anne

x 2:

Pr

imar

y -

mon

thly

Se

cond

ary

- qu

arte

rly

Terti

ary

(sam

ple)

Ope

ratin

g st

aff

Rep

air l

eaks

, bu

ry p

ipes

and

re

info

rce

join

ts

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n in

di

strib

utio

n at

ch

anne

l/dra

in

cros

sing

Con

tam

inat

ed

wat

er e

nter

s whe

n da

mag

ed p

ipe

inun

date

d by

co

ntam

inat

ed

surf

ace

wat

er

Mod

erat

e/

For i

mpa

ct

ratin

g se

e A

nnex

1

Prov

ide

supp

ort

to p

ipes

at

chan

nel/d

rain

cr

ossi

ngs a

nd

use

appr

opria

te

pipe

mat

eria

l co

nnec

tions

Non

-app

rove

d pi

pe

mat

eria

ls; p

ipes

un

supp

orte

d

Pipe

s uns

uppo

rted,

no

col

lars

to

supp

ort e

ntry

into

ch

anne

l/dra

in

Sani

tary

in

spec

tion,

tu

rbid

ity,

chlo

rine

resi

dual

See

anne

x 2:

Pr

imar

y -

mon

thly

Se

cond

ary

- qu

arte

rly

Terti

ary

(sam

ple)

Ope

ratin

g st

aff

Prov

ide

supp

orts

to

pipe

s, re

plac

e un

appr

oved

pi

pe m

ater

ials

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Con

tam

inat

ion

ente

rs d

istri

butio

n sy

stem

from

m

ajor

inst

itutio

ns

(see

Ann

ex fo

r lis

ting)

Wat

er fl

ows f

rom

in

tern

al in

stitu

tion

dist

ribut

ion

syst

em in

to m

ains

su

pply

due

to

redu

ced

pres

sure

be

caus

e of

in

term

itten

ce o

r tra

nsie

nt p

ress

ure

fluct

uatio

ns

Mod

erat

e/

For i

mpa

ct

ratin

g se

e A

nnex

1

Non

-ret

urn

valv

es (N

RV

) on

con

nect

ion

to su

pply

mai

n.

Inst

itutio

nal

wat

er q

ualit

y m

anag

emen

t pl

an a

ppro

ved

by th

e ut

ility

Non

-ret

urn

valv

es

func

tion

corr

ectly

an

d w

ater

qua

lity

man

agem

ent p

lan

deve

lope

d an

d fo

llow

ed

Non

-ret

urn

valv

e

abse

nt/fa

ulty

A

bsen

ce o

f a w

ater

qu

ality

m

anag

emen

t pla

n

Sani

tary

in

spec

tion;

tu

rbid

ity,

chlo

rine

resi

dual

; In

stitu

tion

WSP

by

audi

t

Mon

thly

(N

RV

); an

nual

(p

lan

audi

t)

Ope

ratin

g st

aff (

NR

V)

WQ

CD

(a

udit)

Ensu

re a

ll re

pair

mad

e to

non

-re

turn

val

ves

(NR

V) a

nd

plan

s dev

elop

ed

and

appr

oved

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

Aud

it (W

QC

D)

Mic

robi

al

cont

amin

atio

n fr

om c

ross

-co

nnec

tions

to

sew

er sy

stem

Sew

ers a

nd w

ater

su

pply

mai

ns

plac

ed to

o cl

ose

to

toge

ther

or s

ewer

lie

s abo

ve th

e m

ain.

Mod

erat

e/

For i

mpa

ct

ratin

g se

e A

nnex

3 (r

isk

map

)

Cut

-off

wal

ls;

posi

tive

hydr

osta

tic

pres

sure

in

mai

ns; l

eak

repa

ir;

emer

genc

y di

sinf

ectio

n pr

ogra

mm

e

Syst

ems d

esig

ned

to p

reve

nt c

ross

-co

nnec

tion

unde

r al

l circ

umst

ance

Sudd

en c

hlor

ine

loss

, lea

kage

in

area

s clo

se to

se

wer

s

Ris

k as

sess

men

t; le

akag

e da

ta;

chlo

rine

See

anne

x 2:

Pr

imar

y -

mon

thly

Se

cond

ary

- qu

arte

rly

Terti

ary

(sam

ple)

Ope

ratin

g st

aff

Rep

air a

nd

reha

bilit

atio

n pl

an in

pla

ce fo

r w

ater

supp

ly

and

sew

ers

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

Aud

it (W

QC

D)

Mic

robi

al

cont

amin

atio

n fr

om fa

ecal

ly-

cont

amin

ated

so

ils

Ingr

ess o

f co

ntam

inat

ed

wat

er fr

om so

il co

ntai

ning

pa

thog

ens

Like

ly/

For i

mpa

ct

ratin

g se

e A

nnex

3 (r

isk

map

)

Leak

age,

co

ntro

l, po

sitiv

e hy

dros

tatic

pr

essu

re;

resi

dual

di

sinf

ectio

n

Low

leve

ls o

f le

akag

e in

are

as

with

on-

site

sa

nita

tion;

pos

itive

hy

dros

tatic

pr

essu

re, p

rote

ctiv

e tre

nch

for m

ains

Sudd

en lo

ss o

f ch

lorin

e, in

crea

se

in tu

rbid

ity, l

eak

dete

ctio

n

Chl

orin

e,

turb

idity

, le

akag

e da

ta

See

anne

x 2:

Pr

imar

y -

mon

thly

Se

cond

ary

- qu

arte

rly

Terti

ary

(sam

ple)

Ope

ratin

g st

aff

Rep

air a

nd

reha

bilit

atio

n pl

an in

pla

ce

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

Aud

it (W

QC

D)

Mic

robi

al

cont

amin

atio

n in

trodu

ced

durin

g re

pairs

on

dist

ribut

ion

syst

em

Poor

hyg

iene

in

repa

ir w

ork

allo

ws

cont

amin

atio

n to

en

ter i

nto

the

syst

em

Unl

ikel

y/

Cat

astro

phic

H

ygie

ne c

ode

of

prac

tice

for

repa

irs (s

ee

man

ual o

f goo

d pr

actic

e)

Hyg

iene

cod

e de

velo

ped,

av

aila

ble

to a

ll st

aff

and

follo

wed

Evid

ence

that

hy

gien

e co

de n

ot

follo

wed

Turb

idity

C

hlor

ine

resi

dual

s Si

te

insp

ectio

n

Dur

ing

and

finis

h of

re

pair

Ope

ratin

g st

aff

Trai

n st

aff i

n hy

gien

e co

de

for r

epai

r wor

k

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e C

lost

ridi

a pe

rfri

ngen

s Sa

nita

ry in

spec

tion

(WQ

CD

)

Bio

film

sl

ough

ing

into

dr

inki

ng w

ater

Bio

film

dev

elop

s an

d la

ck o

f co

ntro

l stra

tegy

. H

ydra

ulic

cha

nges

le

ad to

slou

ghin

g

Mod

erat

e/

min

or

Con

trol o

f bi

ofilm

thro

ugh

chlo

rinat

ion,

us

e of

low

-ad

here

nce

mat

eria

ls, l

imit

pote

ntia

l for

su

rges

and

w

ater

ham

mer

Littl

e bi

ofilm

de

velo

ped

and

limite

d ris

k of

sl

ough

ing

Incr

ease

s in

turb

idity

, chl

orin

e lo

ss, c

hang

es in

co

lour

Chl

orin

e re

sidu

al,

colo

ur,

turb

idity

, od

our,

cust

omer

co

mpl

aint

s

See

anne

x 2:

Pr

imar

y -

annu

ally

Se

cond

ary

- bi

-ann

ually

Te

rtiar

y (s

ampl

e)

Ope

ratin

g st

aff

Rep

lace

men

t of

high

adh

eren

ce

pipe

mat

eria

l, op

timis

ed

treat

men

t, im

prov

e st

eady

st

ate

flow

Aer

omon

as

Cor

rosi

on c

oupo

ns

Rec

ord

audi

t (W

QC

D)

Mic

robi

al

cont

amin

atio

n at

ta

p

Are

a su

rrou

ndin

g ta

p an

d sa

nita

ry

cond

ition

of t

ap

allo

w e

ntry

of

cont

amin

ated

w

ater

Like

ly/

Mod

erat

e K

eep

area

clo

se

to ta

p cl

ean

and

mai

ntai

n in

tegr

ity o

f tap

an

d ris

er

No

was

te c

lose

to

tap;

tap

and

riser

in

good

con

ditio

n

Was

te c

lose

to ta

p,

dam

age

to ta

p or

ris

er

Sani

tary

in

spec

tion

Terti

ary

(sam

ple)

C

omm

unity

/ op

erat

ing

staf

f

Trai

ning

of

com

mun

ities

to

mai

ntai

n hy

gien

ic

surr

ound

ings

an

d re

pair

tap

and

riser

s

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n at

pi

pe

Con

tam

inat

ion

ente

rs th

roug

h ex

pose

d pi

pes

Like

ly/

Mod

erat

e (N

B: o

n-se

lling

and

pu

blic

taps

se

rve

man

y pe

ople

)

Kee

p al

l mai

ns

burie

d to

des

ign

dept

hs; p

rovi

de

secu

re d

esig

ns

for o

ver-

grou

nd

pipe

s

All

pipe

s bur

ied

or

with

secu

re

prot

ectio

n

Pipe

s exp

osed

with

no

pro

tect

ion

Sani

tary

in

spec

tion

See

anne

x 2:

Pr

imar

y -

mon

thly

Se

cond

ary

- qu

arte

rly

Terti

ary

(sam

ple)

Ope

ratin

g st

aff

Ensu

re th

at

expo

sed

pipe

s ar

e co

vere

d

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n of

co

mm

unity

tank

s

Con

tam

inat

ion

of

poor

ly m

aint

aine

d ta

nks

Mod

erat

e/

Mod

erat

e C

lean

ing

regi

me

for t

anks

es

tabl

ishe

d

Tank

s cle

an a

nd in

go

od c

ondi

tion

Tank

s dirt

y or

in

need

of r

epai

r Sa

nita

ry

insp

ectio

n Pe

riodi

c C

omm

unity

/ op

erat

ing

staf

f

` E.

coli

Fa

ecal

stre

ptoc

occi

. B

acte

rioph

age

Sani

tary

insp

ectio

n (W

QC

D)

Wat

er sa

fety

pla

n fo

r N

agur

u se

rvic

e re

serv

oir

Cri

tical

lim

its

Mon

itori

ng

Haz

ard

even

t C

ause

R

isk

Con

trol

m

easu

re

Targ

et

Act

ion

Wha

t W

hen

W

ho

Cor

rect

ive

actio

n V

erifi

catio

n

Mic

robi

al

cont

amin

atio

n of

se

rvic

e re

serv

oir

from

bird

s

Bird

s fae

ces e

nter

th

roug

h op

en

insp

ectio

n ha

tche

s

Mod

erat

e/

Cat

astro

phic

In

spec

tion

cove

rs re

mai

n in

pla

ce

Insp

ectio

n co

vers

lo

cked

in p

lace

In

spec

tion

cove

rs

not i

n pl

ace

or

unlo

cked

Sani

tary

in

spec

tion

Chl

orin

e re

sidu

al

Dai

ly

Ope

ratin

g st

aff

Rep

lace

in

spec

tion

cove

r an

d ch

eck

chlo

rine

cons

umpt

ion

E.co

li

Faec

al st

rept

ococ

ci.

Sani

tary

insp

ectio

n (W

QC

D)

Mic

robi

al

cont

amin

atio

n of

se

rvic

e re

serv

oir

from

bird

s and

an

imal

s

Bird

s and

ani

mal

fa

eces

ent

er

thro

ugh

dam

aged

or

cor

rode

d in

spec

tion

hatc

hes

Unl

ikel

y/

Cat

astro

phic

In

spec

tion

cove

rs a

nd

hatc

hes a

re k

ept

in g

ood

cond

ition

Insp

ectio

n ha

tche

s an

d co

vers

show

no

vis

ible

sign

of

dam

age

or

corr

osio

n

Vis

ible

sign

s of

dam

age

or c

orro

sion

Sa

nita

ry

insp

ectio

n Q

uarte

rly/

annu

ally

O

pera

ting

staf

f R

epla

ce

dam

aged

or

corr

oded

cov

ers

and

hatc

hes

Insp

ectio

n (W

QC

D)

Mic

robi

al

cont

amin

atio

n of

se

rvic

e re

serv

oir

from

ani

mal

s

Rod

ents

or

amph

ibia

ns e

nter

se

rvic

e re

serv

oir

thro

ugh

vent

s be

caus

e m

esh

dam

aged

Mod

erat

e/

Min

or

Ven

t mes

h in

pl

ace

V

ent m

esh

in

good

con

ditio

n M

esh

show

s vis

ible

si

gns o

f dam

age

Sani

tary

in

spec

tion

Wee

kly

Ope

ratio

ns

staf

f R

epai

r and

re

plac

e da

mag

ed v

ents

.

E.co

li

Faec

al st

rept

ococ

ci.

Sani

tary

insp

ectio

n (W

QC

D)

Mic

robi

al

cont

amin

atio

n of

w

ater

by

bird

s an

d an

imal

s

Con

tam

inat

ed

wat

er b

uild

s up

on

roof

of t

ank

beca

use

of p

oor

drai

nage

and

in

unda

tes

insp

ectio

n co

vers

Mod

erat

e/

Maj

or

Roo

f gut

ters

for

easy

dra

inag

e of

ra

inw

ater

Gut

ters

free

of

debr

is

Gut

ters

blo

cked

, st

art o

f rai

ny se

ason

Sa

nita

ry

insp

ectio

n Q

uarte

rly

Ope

ratio

ns

staf

f C

lear

gut

ters

E.

coli

Fa

ecal

stre

ptoc

occi

. Sa

nita

ry in

spec

tion

(WQ

CD

)

Ani

mal

and

bird

fa

ecal

A

nim

al a

nd b

ird

faec

al m

ater

ial

build

s up

on ro

of

of se

rvic

e re

serv

oir

Like

ly/

Mod

erat

e Tr

ees d

o no

t ov

erha

ng th

e re

serv

oir a

nd

roof

s kep

t cle

an

Tree

bra

nche

s 2m

fr

om re

serv

oir

roof

; roo

f cle

an

Tree

s with

in 0

.5m

of

roof

; roo

f vis

ibly

di

rty

Sani

tary

in

spec

tion

Qua

rterly

O

pera

ting

staf

f C

ut b

ack

tree

bran

ches

and

cl

ean

roof

E.co

li

Faec

al st

rept

ococ

ci.

Sani

tary

insp

ectio

n (W

QC

D)

Ingr

ess o

f co

ntam

inat

ion

at

inle

t val

ve

Inun

datio

n of

inle

t va

lve

of su

rfac

e w

ater

and

Mod

erat

e/

Maj

or

Goo

d dr

aina

ge

in v

alve

box

; co

vers

on

valv

e bo

x; v

alve

pa

ckin

g in

goo

d co

nditi

on

Val

ve b

oxes

co

vere

d an

d do

no

t hav

e st

andi

ng

wat

er o

r org

anic

m

ater

ial i

n ba

se;

pack

ing

does

not

le

ak

Cov

er o

ut o

f pla

ce,

sign

s of w

ater

or

mat

eria

l bui

ld-u

p;

pack

ing

show

s vi

sibl

e si

gns o

f da

mag

e

Sani

tary

in

spec

tion;

w

asho

ut d

rain

te

sts

Mon

thly

O

pera

ting

staf

f C

lean

val

ve b

ox

and

repl

ace

cove

r; cl

ear

was

hout

dra

in;

repl

ace

pack

ing

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Ingr

ess o

f co

ntam

inat

ion

at

outle

t/was

hout

va

lve

Val

ve is

inun

date

d by

surf

ace

wat

er

or w

aste

wat

er

from

rese

rvoi

r

Alm

ost

certa

in/

Maj

or

Effe

ctiv

e w

asho

ut d

rain

s;

cove

red

valv

e bo

x; g

ood

qual

ity v

alve

pa

ckin

g

Val

ve b

ox

cove

red

and

no

visi

ble

sign

s or

wat

er o

r was

te

mat

ter i

n bo

x;

was

hout

dra

in

func

tiona

l; pa

ckin

g in

goo

d co

nditi

on

Dra

inag

e ar

ound

bo

x bl

ocke

d or

da

mag

ed; w

asho

ut

drai

n bl

ocke

d; w

ater

or

was

te b

uild

-up

in

valv

e bo

x; p

acki

ng

show

ing

sign

s of

wea

r

Sani

tary

in

spec

tion;

w

asho

ut d

rain

te

st

Mon

thly

(SI)

A

nnua

l (dr

ain

test

)

Ope

ratin

g st

aff

Mak

e su

re a

ll bo

xes h

ave

was

hout

dra

in

that

is je

tted

as

part

of re

gula

r m

aint

enan

ce;

rout

ine

pack

ing

repl

acem

ent

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n fr

om b

iofil

m o

r se

dim

ent

Bio

film

slou

ghs

off o

r sed

imen

t is

dist

urbe

d.

Like

ly/

Min

or

Reg

ular

cl

eani

ng o

f se

rvic

e re

serv

oir,

drai

n-do

wn

of

rese

rvoi

r and

cl

ear s

edim

ent

Inte

rior o

f re

serv

oir i

s cle

an

and

sedi

men

t is

min

imis

ed a

nd

undi

stur

bed

Bio

film

dev

elop

s, in

crea

se in

chl

orin

e co

nsum

ptio

n

Sani

tary

in

spec

tion,

ch

lorin

e re

sidu

als,

turb

idity

Mon

thly

O

pera

ting

staf

f Ta

ke re

serv

oir

off-

line

and

clea

nd

Aer

omon

as

Bio

film

cou

pons

Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n at

va

lve

at C

oca-

Col

a fa

ctor

y B

lock

Map

134

3

Ingr

ess o

f co

ntam

inat

ed

wat

er a

t the

val

ve

box

Like

ly/

Min

or

Goo

d ex

tern

al

and

inte

rnal

dr

aina

ge;

stru

ctur

al

inte

grity

of b

ox;

valv

e pa

ckin

g in

go

od c

ondi

tion

Inte

rnal

and

ex

tern

al d

rain

s in

good

con

ditio

n;

valv

e bo

x do

es

not r

equi

re

repa

irs; v

ale

pack

ing

does

not

le

ak

Evid

ence

of d

rain

bl

ocka

ge, s

igns

of

dam

age

to d

rain

s;

sign

s of d

amag

e to

bo

x; v

alve

pac

king

le

akin

g

Sani

tary

in

spec

tion,

tu

rbid

ity,

chlo

rine

resi

dual

Mon

thly

O

pera

ting

staf

f En

sure

dra

ins

are

clea

red

and

any

repa

irs

mad

e to

dra

ins

and

valv

e bo

x;

repl

ace

valv

e pa

ckin

g

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n at

va

lve

V37

7/37

8 B

lock

Map

202

5

Ingr

ess o

f co

ntam

inat

ed

wat

er a

t the

val

ve

box

Like

ly/

Min

or

Goo

d ex

tern

al

and

inte

rnal

dr

aina

ge;

stru

ctur

al

inte

grity

of b

ox;

valv

e pa

ckin

g in

go

od c

ondi

tion

Inte

rnal

and

ex

tern

al d

rain

s in

good

con

ditio

n;

valv

e bo

x do

es

not r

equi

re

repa

irs; v

ale

pack

ing

does

not

le

ak

Evid

ence

of d

rain

bl

ocka

ge, s

igns

of

dam

age

to d

rain

s;

sign

s of d

amag

e to

bo

x; v

alve

pac

king

le

akin

g

Sani

tary

in

spec

tion,

tu

rbid

ity,

chlo

rine

resi

dual

Mon

thly

O

pera

ting

staf

f En

sure

dra

ins

are

clea

red

and

repa

irs m

ade

to

drai

ns a

nd v

alve

bo

x; re

plac

e va

lve

pack

ing

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n at

va

lve

V04

6 B

lock

Map

163

1

Ingr

ess o

f co

ntam

inat

ed

wat

er a

t the

val

ve

box

Like

ly/

Min

or

Goo

d ex

tern

al

and

inte

rnal

dr

aina

ge;

stru

ctur

al

inte

grity

of b

ox;

valv

e pa

ckin

g in

go

od c

ondi

tion

Inte

rnal

and

ex

tern

al d

rain

s in

good

con

ditio

n;

valv

e bo

x do

es

not r

equi

re

repa

irs; v

ale

pack

ing

does

not

le

ak

Evid

ence

of d

rain

bl

ocka

ge, s

igns

of

dam

age

to d

rain

s;

sign

s of d

amag

e to

bo

x; v

alve

pac

king

le

akin

g

Sani

tary

in

spec

tion,

tu

rbid

ity,

chlo

rine

resi

dual

Mon

thly

O

pera

ting

staf

f En

sure

dra

ins

are

clea

red

and

repa

irs m

ade

to

drai

ns a

nd v

alve

bo

x; re

plac

e va

lve

pack

ing

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n at

va

lve

V45

3 B

lock

Map

202

8

Ingr

ess o

f co

ntam

inat

ed

wat

er a

t the

val

ve

box

Like

ly/

Min

or

Goo

d ex

tern

al

and

inte

rnal

dr

aina

ge;

stru

ctur

al

inte

grity

of b

ox;

valv

e pa

ckin

g in

go

od c

ondi

tion

Inte

rnal

and

ex

tern

al d

rain

s in

good

con

ditio

n;

valv

e bo

x do

es

not r

equi

re

repa

irs; v

ale

pack

ing

does

not

le

ak

Evid

ence

of d

rain

bl

ocka

ge, s

igns

of

dam

age

to d

rain

s;

sign

s of d

amag

e to

bo

x; v

alve

pac

king

le

akin

g

Sani

tary

in

spec

tion,

tu

rbid

ity,

chlo

rine

resi

dual

Mon

thly

O

pera

ting

staf

f En

sure

dra

ins

are

clea

red

and

repa

irs m

ade

to

drai

ns a

nd v

alve

bo

x; re

plac

e va

lve

pack

ing

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n in

di

strib

utio

n at

ro

ad c

ross

ings

Con

tam

inat

ed

wat

er e

nter

s th

roug

h da

mag

ed

pipe

s

Mod

erat

e/

For i

mpa

ct

ratin

g se

e A

nnex

1

Pipe

s bur

ied

at

dept

h on

ro

adsi

de, c

olla

rs

rein

forc

e jo

ints

Pipe

s bur

ied,

no

sign

of l

eaks

Pi

pes e

xpos

ed; s

igns

of

leak

s Sa

nita

ry

insp

ectio

n,

turb

idity

, ch

lorin

e re

sidu

al

See

anne

x 2:

Pr

imar

y -

mon

thly

Se

cond

ary

- qu

arte

rly

Terti

ary

(sam

ple)

Ope

ratin

g st

aff

Rep

air l

eaks

, bu

ry p

ipes

and

re

info

rce

join

ts

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n in

di

strib

utio

n at

ch

anne

l/dra

in

cros

sing

Con

tam

inat

ed

wat

er e

nter

s whe

n da

mag

ed p

ipe

inun

date

d by

co

ntam

inat

ed

surf

ace

wat

er

Mod

erat

e/

For i

mpa

ct

ratin

g se

e A

nnex

1

Prov

ide

supp

ort

to p

ipes

at

chan

nel/d

rain

cr

ossi

ngs a

nd

use

appr

opria

te

pipe

mat

eria

l co

nnec

tions

Non

-app

rove

d pi

pe m

ater

ials

; pi

pes

unsu

ppor

ted

Pipe

s uns

uppo

rted,

no

col

lars

to su

ppor

t en

try in

to

chan

nel/d

rain

Sani

tary

in

spec

tion,

tu

rbid

ity,

chlo

rine

resi

dual

See

anne

x 2:

Pr

imar

y -

mon

thly

Se

cond

ary

- qu

arte

rly

Terti

ary

(sam

ple)

Ope

ratin

g st

aff

Prov

ide

supp

orts

to

pipe

s, re

plac

e un

appr

oved

pi

pe m

ater

ials

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Con

tam

inat

ion

ente

rs d

istri

butio

n sy

stem

from

m

ajor

inst

itutio

ns

(see

Ann

ex fo

r lis

ting)

Wat

er fl

ows f

rom

in

tern

al in

stitu

tion

dist

ribut

ion

syst

em in

to m

ains

su

pply

due

to

redu

ced

pres

sure

be

caus

e of

in

term

itten

ce o

r tra

nsie

nt p

ress

ure

fluct

uatio

ns

Mod

erat

e/

For i

mpa

ct

ratin

g se

e A

nnex

1

Non

-ret

urn

valv

es (N

RV

) on

con

nect

ion

to su

pply

mai

n.

Inst

itutio

nal

wat

er q

ualit

y m

anag

emen

t pl

an a

ppro

ved

by th

e ut

ility

Non

-ret

urn

valv

es

func

tion

corr

ectly

an

d w

ater

qua

lity

man

agem

ent p

lan

deve

lope

d an

d fo

llow

ed

Non

-ret

urn

valv

e

abse

nt/fa

ulty

A

bsen

ce o

f a w

ater

qu

ality

man

agem

ent

plan

Sani

tary

in

spec

tion;

tu

rbid

ity,

chlo

rine

resi

dual

; In

stitu

tion

WSP

by

audi

t

Mon

thly

(N

RV

); an

nual

(p

lan

audi

t)

Ope

ratin

g st

aff (

NR

V)

WQ

CD

(a

udit)

Ensu

re a

ll re

pair

mad

e to

non

-re

turn

val

ves

(NR

V) a

nd

plan

s dev

elop

ed

and

appr

oved

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

Aud

it (W

QC

D)

Mic

robi

al

cont

amin

atio

n fr

om c

ross

-co

nnec

tions

to

sew

er sy

stem

Sew

ers a

nd w

ater

su

pply

mai

ns

plac

ed to

o cl

ose

to

toge

ther

or s

ewer

lie

s abo

ve th

e m

ain.

Mod

erat

e/

For i

mpa

ct

ratin

g se

e A

nnex

3 (r

isk

map

)

Cut

-off

wal

ls;

posi

tive

hydr

osta

tic

pres

sure

in

mai

ns; l

eak

repa

ir;

emer

genc

y di

sinf

ectio

n pr

ogra

mm

e

Syst

ems d

esig

ned

to p

reve

nt c

ross

-co

nnec

tion

unde

r al

l circ

umst

ance

Sudd

en c

hlor

ine

loss

, lea

kage

in

area

s clo

se to

sew

ers

Ris

k as

sess

men

t; le

akag

e da

ta;

chlo

rine

See

anne

x 2:

Pr

imar

y -

mon

thly

Se

cond

ary

- qu

arte

rly

Terti

ary

(sam

ple)

Ope

ratin

g st

aff

Rep

air a

nd

reha

bilit

atio

n pl

an in

pla

ce fo

r w

ater

supp

ly

and

sew

ers

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

Aud

it (W

QC

D)

Mic

robi

al

cont

amin

atio

n fr

om fa

ecal

ly-

cont

amin

ated

so

ils

Ingr

ess o

f co

ntam

inat

ed

wat

er fr

om so

il co

ntai

ning

pa

thog

ens

Like

ly/

For i

mpa

ct

ratin

g se

e A

nnex

3 (r

isk

map

)

Leak

age,

co

ntro

l, po

sitiv

e hy

dros

tatic

pr

essu

re;

resi

dual

di

sinf

ectio

n

Low

leve

ls o

f le

akag

e in

are

as

with

on-

site

sa

nita

tion;

po

sitiv

e hy

dros

tatic

pr

essu

re,

prot

ectiv

e tre

nch

for m

ains

Sudd

en lo

ss o

f ch

lorin

e, in

crea

se in

tu

rbid

ity, l

eak

dete

ctio

n

Chl

orin

e,

turb

idity

, le

akag

e da

ta

See

anne

x 2:

Pr

imar

y -

mon

thly

Se

cond

ary

- qu

arte

rly

Terti

ary

(sam

ple)

Ope

ratin

g st

aff

Rep

air a

nd

reha

bilit

atio

n pl

an in

pla

ce

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

Aud

it (W

QC

D)

Mic

robi

al

cont

amin

atio

n in

trodu

ced

durin

g re

pairs

on

dist

ribut

ion

syst

em

Poor

hyg

iene

in

repa

ir w

ork

allo

ws

cont

amin

atio

n to

en

ter i

nto

the

syst

em

Unl

ikel

y/

Cat

astro

phic

H

ygie

ne c

ode

of

prac

tice

for

repa

irs (s

ee

man

ual o

f goo

d pr

actic

e)

Hyg

iene

cod

e de

velo

ped,

av

aila

ble

to a

ll st

aff a

nd fo

llow

ed

Evid

ence

that

hy

gien

e co

de n

ot

follo

wed

Turb

idity

C

hlor

ine

resi

dual

s Si

te

insp

ectio

n

Dur

ing

and

finis

h of

re

pair

Ope

ratin

g st

aff

Trai

n st

aff i

n hy

gien

e co

de

for r

epai

r wor

k

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e C

lost

ridi

a pe

rfri

ngen

s Sa

nita

ry in

spec

tion

(WQ

CD

) B

iofil

m

slou

ghin

g in

to

drin

king

wat

er

Bio

film

dev

elop

s an

d la

ck o

f co

ntro

l stra

tegy

. H

ydra

ulic

cha

nges

le

ad to

slou

ghin

g

Mod

erat

e/

min

or

Con

trol o

f bi

ofilm

thro

ugh

chlo

rinat

ion,

us

e of

low

-ad

here

nce

mat

eria

ls, l

imit

pote

ntia

l for

su

rges

and

w

ater

ham

mer

Littl

e bi

ofilm

de

velo

ped

and

limite

d ris

k of

sl

ough

ing

Incr

ease

s in

turb

idity

, chl

orin

e lo

ss, c

hang

es in

co

lour

Chl

orin

e re

sidu

al,

colo

ur,

turb

idity

, od

our,

cust

omer

co

mpl

aint

s

See

anne

x 2:

Pr

imar

y -

annu

ally

Se

cond

ary

- bi

-ann

ually

Te

rtiar

y (s

ampl

e)

Ope

ratin

g st

aff

Rep

lace

men

t of

high

adh

eren

ce

pipe

mat

eria

l, op

timis

ed

treat

men

t, im

prov

e st

eady

st

ate

flow

Aer

omon

as

Cor

rosi

on c

oupo

ns

Rec

ord

audi

t (W

QC

D)

Mic

robi

al

cont

amin

atio

n at

ta

p

Are

a su

rrou

ndin

g ta

p an

d sa

nita

ry

cond

ition

of t

ap

allo

w e

ntry

of

cont

amin

ated

w

ater

Like

ly/

Mod

erat

e K

eep

area

clo

se

to ta

p cl

ean

and

mai

ntai

n in

tegr

ity o

f tap

an

d ris

er

No

was

te c

lose

to

tap;

tap

and

riser

in

goo

d co

nditi

on

Was

te c

lose

to ta

p,

dam

age

to ta

p or

ris

er

Sani

tary

in

spec

tion

Terti

ary

(sam

ple)

C

omm

unity

/ op

erat

ing

staf

f

Trai

ning

of

com

mun

ities

to

mai

ntai

n hy

gien

ic

surr

ound

ings

an

d re

pair

tap

and

riser

s

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n at

pi

pe

Con

tam

inat

ion

ente

rs th

roug

h ex

pose

d pi

pes

Like

ly/

Mod

erat

e (N

B: o

n-se

lling

and

pu

blic

taps

se

rve

man

y pe

ople

)

Kee

p al

l mai

ns

burie

d to

des

ign

dept

hs; p

rovi

de

secu

re d

esig

ns

for o

ver-

grou

nd

pipe

s

All

pipe

s bur

ied

or w

ith se

cure

pr

otec

tion

Pipe

s exp

osed

with

no

pro

tect

ion

Sani

tary

in

spec

tion

See

anne

x 2:

Pr

imar

y -

mon

thly

Se

cond

ary

- qu

arte

rly

Terti

ary

(sam

ple)

Ope

ratin

g st

aff

Ensu

re th

at

expo

sed

pipe

s ar

e co

vere

d

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n of

co

mm

unity

tank

s

Con

tam

inat

ion

of

poor

ly m

aint

aine

d ta

nks

Mod

erat

e/

Mod

erat

e C

lean

ing

regi

me

for t

anks

es

tabl

ishe

d

Tank

s cle

an a

nd

in g

ood

cond

ition

Ta

nks d

irty

or in

ne

ed o

f rep

air

Sani

tary

in

spec

tion

Perio

dic

Com

mun

ity/

oper

atin

g st

aff

` E.

coli

Fa

ecal

stre

ptoc

occi

. B

acte

rioph

age

Sani

tary

insp

ectio

n (W

QC

D)

Wat

er sa

fety

pla

n fo

r R

ubag

a se

rvic

e re

serv

oir

Cri

tical

lim

its

Mon

itori

ng

Haz

ard

even

t C

ause

R

isk

Con

trol

m

easu

re

Targ

et

Act

ion

Wha

t W

hen

W

ho

Cor

rect

ive

actio

n V

erifi

catio

n

Mic

robi

al

cont

amin

atio

n of

se

rvic

e re

serv

oir

from

bird

s

Bird

s fae

ces e

nter

th

roug

h op

en

insp

ectio

n ha

tche

s

Mod

erat

e/

Cat

astro

phic

In

spec

tion

cove

rs re

mai

n in

pla

ce

Insp

ectio

n co

vers

lo

cked

in p

lace

In

spec

tion

cove

rs

not i

n pl

ace

or

unlo

cked

Sani

tary

in

spec

tion

Chl

orin

e re

sidu

al

Dai

ly

Ope

ratin

g st

aff

Rep

lace

in

spec

tion

cove

r an

d ch

eck

chlo

rine

cons

umpt

ion

E.co

li

Faec

al st

rept

ococ

ci.

Sani

tary

insp

ectio

n (W

QC

D)

Mic

robi

al

cont

amin

atio

n of

se

rvic

e re

serv

oir

from

bird

s and

an

imal

s

Bird

s and

ani

mal

fa

eces

ent

er

thro

ugh

dam

aged

or

cor

rode

d in

spec

tion

hatc

hes

Unl

ikel

y/

Cat

astro

phic

In

spec

tion

cove

rs a

nd

hatc

hes a

re

kept

in g

ood

cond

ition

Insp

ectio

n ha

tche

s and

co

vers

show

no

visi

ble

sign

of

dam

age

or

corr

osio

n

Vis

ible

sign

s of

dam

age

or

corr

osio

n

Sani

tary

in

spec

tion

Qua

rterly

/ an

nual

ly

Ope

ratin

g st

aff

Rep

lace

dam

aged

or

cor

rode

d co

vers

an

d ha

tche

s

Insp

ectio

n (W

QC

D)

Mic

robi

al

cont

amin

atio

n of

se

rvic

e re

serv

oir

from

ani

mal

s

Rod

ents

or

amph

ibia

ns e

nter

se

rvic

e re

serv

oir

thro

ugh

vent

s be

caus

e m

esh

dam

aged

Mod

erat

e/

Min

or

Ven

t mes

h in

pl

ace

V

ent m

esh

in

good

con

ditio

n M

esh

show

s vi

sibl

e si

gns o

f da

mag

e

Sani

tary

in

spec

tion

Wee

kly

Ope

ratio

ns

staf

f R

epai

r and

repl

ace

dam

aged

ven

ts.

E.co

li

Faec

al st

rept

ococ

ci.

Sani

tary

insp

ectio

n (W

QC

D)

Mic

robi

al

cont

amin

atio

n of

w

ater

by

bird

s an

d an

imal

s

Con

tam

inat

ed

wat

er b

uild

s up

on

roof

of t

ank

beca

use

of p

oor

drai

nage

and

in

unda

tes

insp

ectio

n co

vers

Mod

erat

e/

Maj

or

Roo

f gut

ters

fo

r eas

y dr

aina

ge o

f ra

inw

ater

Gut

ters

free

of

debr

is

Gut

ters

blo

cked

, st

art o

f rai

ny

seas

on

Sani

tary

in

spec

tion

Qua

rterly

O

pera

tions

st

aff

Cle

ar g

utte

rs

E.co

li

Faec

al st

rept

ococ

ci.

Sani

tary

insp

ectio

n (W

QC

D)

Ani

mal

and

bird

fa

ecal

A

nim

al a

nd b

ird

faec

al m

ater

ial

build

s up

on ro

of

of se

rvic

e re

serv

oir

Like

ly/

Mod

erat

e Tr

ees d

o no

t ov

erha

ng th

e re

serv

oir a

nd

roof

s kep

t cl

ean

Tree

bra

nche

s 2m

from

re

serv

oir r

oof;

roof

cle

an

Tree

s with

in

0.5m

of r

oof;

roof

vis

ibly

dirt

y

Sani

tary

in

spec

tion

Qua

rterly

O

pera

ting

staf

f C

ut b

ack

tree

bran

ches

and

cl

ean

roof

E.co

li

Faec

al st

rept

ococ

ci.

Sani

tary

insp

ectio

n (W

QC

D)

Ingr

ess o

f co

ntam

inat

ion

at

inle

t val

ve

Inun

datio

n of

inle

t va

lve

of su

rfac

e w

ater

and

Mod

erat

e/

Maj

or

Goo

d dr

aina

ge in

va

lve

box;

co

vers

on

valv

e bo

x;

valv

e pa

ckin

g in

goo

d co

nditi

on

Val

ve b

oxes

co

vere

d an

d do

no

t hav

e st

andi

ng

wat

er o

r org

anic

m

ater

ial i

n ba

se;

pack

ing

does

not

le

ak

Cov

er o

ut o

f pl

ace,

sign

s of

wat

er o

r mat

eria

l bu

ild-u

p;

pack

ing

show

s vi

sibl

e si

gns o

f da

mag

e

Sani

tary

in

spec

tion;

w

asho

ut d

rain

te

sts

Mon

thly

O

pera

ting

staf

f C

lean

val

ve b

ox

and

repl

ace

cove

r; cl

ear w

asho

ut

drai

n; re

plac

e pa

ckin

g

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Ingr

ess o

f co

ntam

inat

ion

at

outle

t/was

hout

va

lve

Val

ve is

inun

date

d by

surf

ace

wat

er

or w

aste

wat

er

from

rese

rvoi

r

Alm

ost

certa

in/

Maj

or

Effe

ctiv

e w

asho

ut

drai

ns;

cove

red

valv

e bo

x; g

ood

qual

ity v

alve

pa

ckin

g

Val

ve b

ox

cove

red

and

no

visi

ble

sign

s or

wat

er o

r was

te

mat

ter i

n bo

x;

was

hout

dra

in

func

tiona

l; pa

ckin

g in

goo

d co

nditi

on

Dra

inag

e ar

ound

bo

x bl

ocke

d or

da

mag

ed;

was

hout

dra

in

bloc

ked;

wat

er o

r w

aste

bui

ld-u

p in

va

lve

box;

pa

ckin

g sh

owin

g si

gns o

f wea

r

Sani

tary

in

spec

tion;

w

asho

ut d

rain

te

st

Mon

thly

(SI)

A

nnua

l (dr

ain

test

)

Ope

ratin

g st

aff

Mak

e su

re a

ll bo

xes h

ave

was

hout

dra

in th

at

is je

tted

as p

art o

f re

gula

r m

aint

enan

ce;

rout

ine

pack

ing

repl

acem

ent

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n fr

om b

iofil

m o

r se

dim

ent

Bio

film

slou

ghs

off o

r sed

imen

t is

dist

urbe

d.

Like

ly/

Min

or

Reg

ular

cl

eani

ng o

f se

rvic

e re

serv

oir,

drai

n-do

wn

of

rese

rvoi

r and

cl

ear

sedi

men

t

Inte

rior o

f re

serv

oir i

s cle

an

and

sedi

men

t is

min

imis

ed a

nd

undi

stur

bed

Bio

film

de

velo

ps,

incr

ease

in

chlo

rine

cons

umpt

ion

Sani

tary

in

spec

tion,

ch

lorin

e re

sidu

als,

turb

idity

Qua

rterly

O

pera

ting

staf

f Ta

ke re

serv

oir

off-

line

and

clea

nd

Aer

omon

as

Bio

film

cou

pons

Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n at

va

lve

V12

97

Blo

ck M

ap 2

415

Ingr

ess o

f co

ntam

inat

ed

wat

er a

t the

val

ve

box

Like

ly/

Cat

astro

phic

G

ood

exte

rnal

an

d in

tern

al

drai

nage

; st

ruct

ural

in

tegr

ity o

f bo

x; v

alve

pa

ckin

g in

go

od

cond

ition

Inte

rnal

and

ex

tern

al d

rain

s in

good

con

ditio

n;

valv

e bo

x do

es

not r

equi

re

repa

irs; v

ale

pack

ing

does

not

le

ak

Evid

ence

of

drai

n bl

ocka

ge,

sign

s of d

amag

e to

dra

ins;

sign

s of

dam

age

to

box;

val

ve

pack

ing

leak

ing

Sani

tary

in

spec

tion,

tu

rbid

ity,

chlo

rine

resi

dual

Mon

thly

O

pera

ting

staf

f En

sure

dra

ins a

re

clea

red

and

any

repa

irs m

ade

to

drai

ns a

nd v

alve

bo

x; re

plac

e va

lve

pack

ing

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n at

va

lve

1554

/155

5 B

lock

Map

231

6

Ingr

ess o

f co

ntam

inat

ed

wat

er a

t the

val

ve

box

Like

ly/

Cat

astro

phic

G

ood

exte

rnal

an

d in

tern

al

drai

nage

; st

ruct

ural

in

tegr

ity o

f bo

x; v

alve

pa

ckin

g in

go

od

cond

ition

Inte

rnal

and

ex

tern

al d

rain

s in

good

con

ditio

n;

valv

e bo

x do

es

not r

equi

re

repa

irs; v

ale

pack

ing

does

not

le

ak

Evid

ence

of

drai

n bl

ocka

ge,

sign

s of d

amag

e to

dra

ins;

sign

s of

dam

age

to

box;

val

ve

pack

ing

leak

ing

Sani

tary

in

spec

tion,

tu

rbid

ity,

chlo

rine

resi

dual

Mon

thly

O

pera

ting

staf

f En

sure

dra

ins a

re

clea

red

and

repa

irs m

ade

to

drai

ns a

nd v

alve

bo

x; re

plac

e va

lve

pack

ing

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n at

va

lve

V15

75

Blo

ck M

ap 2

115

Ingr

ess o

f co

ntam

inat

ed

wat

er a

t the

val

ve

box

Like

ly/

Maj

or

Goo

d ex

tern

al

and

inte

rnal

dr

aina

ge;

stru

ctur

al

inte

grity

of

box;

val

ve

pack

ing

in

good

co

nditi

on

Inte

rnal

and

ex

tern

al d

rain

s in

good

con

ditio

n;

valv

e bo

x do

es

not r

equi

re

repa

irs; v

ale

pack

ing

does

not

le

ak

Evid

ence

of

drai

n bl

ocka

ge,

sign

s of d

amag

e to

dra

ins;

sign

s of

dam

age

to

box;

val

ve

pack

ing

leak

ing

Sani

tary

in

spec

tion,

tu

rbid

ity,

chlo

rine

resi

dual

Mon

thly

O

pera

ting

staf

f En

sure

dra

ins a

re

clea

red

and

repa

irs m

ade

to

drai

ns a

nd v

alve

bo

x; re

plac

e va

lve

pack

ing

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n at

va

lve

V15

64/5

B

lock

Map

241

4

Ingr

ess o

f co

ntam

inat

ed

wat

er a

t the

val

ve

box

Like

ly/

Maj

or

Goo

d ex

tern

al

and

inte

rnal

dr

aina

ge;

stru

ctur

al

inte

grity

of

box;

val

ve

pack

ing

in

good

co

nditi

on

Inte

rnal

and

ex

tern

al d

rain

s in

good

con

ditio

n;

valv

e bo

x do

es

not r

equi

re

repa

irs; v

ale

pack

ing

does

not

le

ak

Evid

ence

of

drai

n bl

ocka

ge,

sign

s of d

amag

e to

dra

ins;

sign

s of

dam

age

to

box;

val

ve

pack

ing

leak

ing

Sani

tary

in

spec

tion,

tu

rbid

ity,

chlo

rine

resi

dual

Mon

thly

O

pera

ting

staf

f En

sure

dra

ins a

re

clea

red

and

repa

irs m

ade

to

drai

ns a

nd v

alve

bo

x; re

plac

e va

lve

pack

ing

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n at

va

lve

V11

51

Blo

ck M

ap 1

814

Ingr

ess o

f co

ntam

inat

ed

wat

er a

t the

val

ve

box

Like

ly/

Mod

erat

e G

ood

exte

rnal

an

d in

tern

al

drai

nage

; st

ruct

ural

in

tegr

ity o

f bo

x; v

alve

pa

ckin

g in

go

od

cond

ition

Inte

rnal

and

ex

tern

al d

rain

s in

good

con

ditio

n;

valv

e bo

x do

es

not r

equi

re

repa

irs; v

ale

pack

ing

does

not

le

ak

Evid

ence

of

drai

n bl

ocka

ge,

sign

s of d

amag

e to

dra

ins;

sign

s of

dam

age

to

box;

val

ve

pack

ing

leak

ing

Sani

tary

in

spec

tion,

tu

rbid

ity,

chlo

rine

resi

dual

Qua

rterly

O

pera

ting

staf

f En

sure

dra

ins a

re

clea

red

and

repa

irs m

ade

to

drai

ns a

nd v

alve

bo

x; re

plac

e va

lve

pack

ing

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n at

va

lve

H70

9 B

lock

Map

251

3

Ingr

ess o

f co

ntam

inat

ed

wat

er a

t the

val

ve

box

Like

ly/

Mod

erat

e G

ood

exte

rnal

an

d in

tern

al

drai

nage

; st

ruct

ural

in

tegr

ity o

f bo

x; v

alve

pa

ckin

g in

go

od

cond

ition

Inte

rnal

and

ex

tern

al d

rain

s in

good

con

ditio

n;

valv

e bo

x do

es

not r

equi

re

repa

irs; v

ale

pack

ing

does

not

le

ak

Evid

ence

of

drai

n bl

ocka

ge,

sign

s of d

amag

e to

dra

ins;

sign

s of

dam

age

to

box;

val

ve

pack

ing

leak

ing

Sani

tary

in

spec

tion,

tu

rbid

ity,

chlo

rine

resi

dual

Qua

rterly

O

pera

ting

staf

f En

sure

dra

ins a

re

clea

red

and

repa

irs m

ade

to

drai

ns a

nd v

alve

bo

x; re

plac

e va

lve

pack

ing

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n at

va

lve

V13

01

Blo

ck M

ap 2

514

Ingr

ess o

f co

ntam

inat

ed

wat

er a

t the

val

ve

box

Like

ly/

Mod

erat

e G

ood

exte

rnal

an

d in

tern

al

drai

nage

; st

ruct

ural

in

tegr

ity o

f bo

x; v

alve

pa

ckin

g in

go

od

cond

ition

Inte

rnal

and

ex

tern

al d

rain

s in

good

con

ditio

n;

valv

e bo

x do

es

not r

equi

re

repa

irs; v

ale

pack

ing

does

not

le

ak

Evid

ence

of

drai

n bl

ocka

ge,

sign

s of d

amag

e to

dra

ins;

sign

s of

dam

age

to

box;

val

ve

pack

ing

leak

ing

Sani

tary

in

spec

tion,

tu

rbid

ity,

chlo

rine

resi

dual

Qua

rterly

O

pera

ting

staf

f En

sure

dra

ins a

re

clea

red

and

repa

irs m

ade

to

drai

ns a

nd v

alve

bo

x; re

plac

e va

lve

pack

ing

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n in

di

strib

utio

n at

ro

ad c

ross

ings

Con

tam

inat

ed

wat

er e

nter

s th

roug

h da

mag

ed

pipe

s

Mod

erat

e/

For i

mpa

ct

ratin

g se

e A

nnex

1

Pipe

s bur

ied

at d

epth

on

road

side

, co

llars

re

info

rce

join

ts

Pipe

s bur

ied,

no

sign

of l

eaks

Pi

pes e

xpos

ed;

sign

s of l

eaks

Sa

nita

ry

insp

ectio

n,

turb

idity

, ch

lorin

e re

sidu

al

See

anne

x 2:

Pr

imar

y -

mon

thly

Se

cond

ary

- qu

arte

rly

Terti

ary

(sam

ple)

Ope

ratin

g st

aff

Rep

air l

eaks

, bur

y pi

pes a

nd

rein

forc

e jo

ints

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Mic

robi

al

cont

amin

atio

n in

di

strib

utio

n at

ch

anne

l/dra

in

cros

sing

Con

tam

inat

ed

wat

er e

nter

s whe

n da

mag

ed p

ipe

inun

date

d by

co

ntam

inat

ed

surf

ace

wat

er

Mod

erat

e/

For i

mpa

ct

ratin

g se

e A

nnex

1

Prov

ide

supp

ort t

o pi

pes a

t ch

anne

l/dra

in

cros

sing

s and

us

e ap

prop

riate

pi

pe m

ater

ial

conn

ectio

ns

Non

-app

rove

d pi

pe m

ater

ials

; pi

pes

unsu

ppor

ted

Pipe

s un

supp

orte

d, n

o co

llars

to

supp

ort e

ntry

in

to

chan

nel/d

rain

Sani

tary

in

spec

tion,

tu

rbid

ity,

chlo

rine

resi

dual

See

anne

x 2:

Pr

imar

y -

mon

thly

Se

cond

ary

- qu

arte

rly

Terti

ary

(sam

ple)

Ope

ratin

g st

aff

Prov

ide

supp

orts

to

pip

es, r

epla

ce

unap

prov

ed p

ipe

mat

eria

ls

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

(WQ

CD

)

Con

tam

inat

ion

ente

rs d

istri

butio

n sy

stem

from

m

ajor

inst

itutio

ns

(see

Ann

ex fo

r lis

ting)

Wat

er fl

ows f

rom

in

tern

al in

stitu

tion

dist

ribut

ion

syst

em in

to m

ains

su

pply

due

to

redu

ced

pres

sure

be

caus

e of

in

term

itten

ce o

r tra

nsie

nt p

ress

ure

fluct

uatio

ns

Mod

erat

e/

For i

mpa

ct

ratin

g se

e A

nnex

1

Non

-ret

urn

valv

es (N

RV

) on

con

nect

ion

to su

pply

m

ain.

In

stitu

tiona

l w

ater

qua

lity

man

agem

ent

plan

app

rove

d by

the

utili

ty

Non

-ret

urn

valv

es

func

tion

corr

ectly

an

d w

ater

qua

lity

man

agem

ent p

lan

deve

lope

d an

d fo

llow

ed

Non

-ret

urn

valv

e

abse

nt/fa

ulty

A

bsen

ce o

f a

wat

er q

ualit

y m

anag

emen

t pl

an

Sani

tary

in

spec

tion;

tu

rbid

ity,

chlo

rine

resi

dual

; In

stitu

tion

WSP

by

aud

it

Mon

thly

(N

RV

); an

nual

(p

lan

audi

t)

Ope

ratin

g st

aff (

NR

V)

WQ

CD

(a

udit)

Ensu

re a

ll re

pair

mad

e to

non

-re

turn

val

ves

(NR

V) a

nd p

lans

de

velo

ped

and

appr

oved

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

Aud

it (W

QC

D)

Mic

robi

al

cont

amin

atio

n fr

om c

ross

-co

nnec

tions

to

sew

er sy

stem

Sew

ers a

nd w

ater

su

pply

mai

ns

plac

ed to

o cl

ose

to

toge

ther

or s

ewer

lie

s abo

ve th

e m

ain.

Mod

erat

e/

For i

mpa

ct

ratin

g se

e A

nnex

3 (r

isk

map

)

Cut

-off

wal

ls;

posi

tive

hydr

osta

tic

pres

sure

in

mai

ns; l

eak

repa

ir;

emer

genc

y di

sinf

ectio

n pr

ogra

mm

e

Syst

ems d

esig

ned

to p

reve

nt c

ross

-co

nnec

tion

unde

r al

l circ

umst

ance

Sudd

en c

hlor

ine

loss

, lea

kage

in

area

s clo

se to

se

wer

s

Ris

k as

sess

men

t; le

akag

e da

ta;

chlo

rine

See

anne

x 2:

Pr

imar

y -

mon

thly

Se

cond

ary

- qu

arte

rly

Terti

ary

(sam

ple)

Ope

ratin

g st

aff

Rep

air a

nd

reha

bilit

atio

n pl

an

in p

lace

for w

ater

su

pply

and

sew

ers

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

Aud

it (W

QC

D)

Mic

robi

al

cont

amin

atio

n fr

om fa

ecal

ly-

cont

amin

ated

so

ils

Ingr

ess o

f co

ntam

inat

ed

wat

er fr

om so

il co

ntai

ning

pa

thog

ens

Like

ly/

For i

mpa

ct

ratin

g se

e A

nnex

3 (r

isk

map

)

Leak

age,

co

ntro

l, po

sitiv

e hy

dros

tatic

pr

essu

re;

resi

dual

di

sinf

ectio

n

Low

leve

ls o

f le

akag

e in

are

as

with

on-

site

sa

nita

tion;

po

sitiv

e hy

dros

tatic

pr

essu

re,

prot

ectiv

e tre

nch

for m

ains

Sudd

en lo

ss o

f ch

lorin

e,

incr

ease

in

turb

idity

, lea

k de

tect

ion

Chl

orin

e,

turb

idity

, le

akag

e da

ta

See

anne

x 2:

Pr

imar

y -

mon

thly

Se

cond

ary

- qu

arte

rly

Terti

ary

(sam

ple)

Ope

ratin

g st

aff

Rep

air a

nd

reha

bilit

atio

n pl

an

in p

lace

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e Sa

nita

ry in

spec

tion

Aud

it (W

QC

D)

Mic

robi

al

cont

amin

atio

n in

trodu

ced

durin

g re

pairs

on

dist

ribut

ion

syst

em

Poor

hyg

iene

in

repa

ir w

ork

allo

ws

cont

amin

atio

n to

en

ter i

nto

the

syst

em

Unl

ikel

y/

Cat

astro

phic

H

ygie

ne c

ode

of p

ract

ice

for

repa

irs (s

ee

man

ual o

f go

od

prac

tice)

Hyg

iene

cod

e de

velo

ped,

av

aila

ble

to a

ll st

aff a

nd fo

llow

ed

Evid

ence

that

hy

gien

e co

de

not f

ollo

wed

Turb

idity

C

hlor

ine

resi

dual

s Si

te in

spec

tion

Dur

ing

and

finis

h of

repa

ir O

pera

ting

staf

f Tr

ain

staf

f in

hygi

ene

code

for

repa

ir w

ork

E.co

li

Faec

al st

rept

ococ

ci.

Bac

terio

phag

e C

lost

ridi

a pe

rfri

ngen

s Sa

nita

ry in

spec

tion

(WQ

CD

)

Wat

er S

afet

y Pl

an: G

aba

I Tre

atm

ent W

orks

Cri

tical

Lim

its

Mon

itori

ng

Cor

rect

ive

Act

ion

Uni

t Pr

oces

s H

azar

d E

vent

C

ause

R

isk

Con

trol

M

easu

re

Targ

et L

evel

s A

ctio

n Le

vel

Wha

t W

hen

Who

Ver

ifica

tion

Inta

ke

Hig

h iro

n in

ra

w w

ater

C

orro

sion

of

inta

ke sc

reen

s M

oder

ate/

In

sign

ifica

nt

Iron

read

ings

C

olou

r rea

ding

s

Iron

0.3

mg/

l >0

.3m

g/l

Test

for

iron

Mon

thly

W

TPO

B

leac

hing

/cle

anin

g of

scre

ens

Aud

it, c

usto

mer

co

mpl

aint

s

B

lock

age

of

raw

wat

er

scre

en

Shal

low

inta

ke

resu

lting

in

clos

e co

ntac

t w

ith a

lgae

, pl

astic

bot

tles,

poly

then

e ba

gs

Like

ly/

Cat

astro

phic

Fl

ow re

adin

gs a

nd

thro

ughp

ut in

raw

w

ater

sum

p

3,74

5m3 .h

r <3

,000

m3 /h

r Pu

mpi

ng

rate

O

n-lin

e,

at le

ast

hour

ly

WTP

O

Incr

ease

dep

th o

f in

take

A

udit,

insp

ectio

n

M

icro

bial

co

ntam

inat

ion

of w

ater

en

terin

g pl

ant

Bird

dro

ppin

gs

on a

cces

s brid

ge

over

layi

ng in

let

pipe

Mod

erat

e/

Min

or

Sani

tary

inte

grity

of

acc

ess b

ridge

N

o bi

rd d

ropp

ings

bu

ild u

p on

brid

ge

Vis

ible

bird

dr

oppi

ngs o

n br

idge

Sani

tary

su

rvey

D

aily

W

TPO

R

egul

ar c

lean

ing

of

acce

ss b

ridge

En

sure

lim

ited

leak

ages

in in

let p

ipe

E.co

li Fa

ecal

st

rept

ococ

ci

Insp

ectio

n R

aw w

ater

su

mp

Bre

akth

roug

h of

pat

hoge

nic

bact

eria

to

cand

y fil

ters

Hig

h se

dim

ent

load

ing

in

mic

ro-s

train

er

boos

ter t

ank

and

visi

ble

bird

dr

oppi

ngs

Like

ly/

Cat

astro

phic

Sa

nita

ry in

tegr

ity

of b

oost

er ta

nk

Turb

idity

bel

ow

100

NTU

; no

visi

ble

bird

dr

oppi

ngs

Turb

idity

exc

eeds

10

0 N

TU; v

isib

le

bird

dro

ppin

gs

Turb

idity

an

d

sani

tary

in

spec

tion

Wee

kly

WTP

O

Incr

ease

cle

anin

g fr

eque

ncy

from

12

mon

ths t

o 6

mon

ths

E.co

li Fa

ecal

st

rept

ococ

ci

Clo

stri

dia

perf

ring

ens

Aud

it Pa

tters

on

and

Man

nesm

an

back

was

hing

ta

nk

Con

tam

inat

ed

wat

er u

sed

for

back

was

hing

Leak

ing

tank

(e

xist

ent f

or

mor

e th

an 1

0 ye

ars)

Mod

erat

e/

Maj

or

Dis

posa

l of f

irst

filtra

te a

fter

back

was

hing

to

was

te

90%

redu

ctio

n in

tu

rbid

ity

<0.2

NTU

Turb

idity

0.3

NTU

Turb

idity

O

n ba

ck-

was

hing

W

TPO

Fi

x ta

nk

Don

’t ru

n th

e sa

nd

dry

E.co

li C

lost

ridi

a pe

rfri

ngen

s A

udit

Can

dy fi

lter

back

was

hing

ta

nk

Con

tam

inat

ed

wat

er u

sed

for

back

was

hing

fil

ters

Leak

ing

valv

e on

tank

M

oder

ate/

M

ajor

D

ispo

sal o

f firs

t fil

trate

afte

r ba

ckw

ashi

ng to

w

aste

90%

redu

ctio

n in

tu

rbid

ity

<0.2

MTU

Turb

idity

0.3

NTU

Turb

idity

O

n ba

ck-

was

hing

W

TPO

Fi

x ta

nk

Don

’t ru

n th

e sa

nd

dry

E.co

li C

lost

ridi

a pe

rfri

ngen

s A

udit

Filtr

atio

n (M

anne

sman

4 fil

ters

)

Man

nesm

an

filte

rs -

mud

ba

lling

and

fo

rmat

ion

of

sand

poc

kets

at

edge

of t

ank

Ove

rload

ing

of

filte

rs

Mod

erat

e/

Maj

or

Red

uctio

n of

tu

rbid

ity to

<1

NTU

H

eadl

oss d

urin

g ba

ckw

ashi

ng

0.1N

TU

Bac

kwas

hing

15m

he

ad @

1,

200m

3 /hr

1NTU

<1

5m h

ead

<1,2

00m

3 /hr

Hea

d lo

ss

Insp

ectio

n O

n-lin

e A

t lea

st

daily

WTP

O

Fix

air s

cour

ers

Aud

it; in

spec

tion

of b

ackw

ashi

ng

Sh

ort-c

ircui

ting

of M

anne

man

fil

ters

Poor

ope

ratio

n of

man

ually

op

erat

ed fi

lter

rate

s

Mod

erat

e/

Maj

or

Con

trol o

f fil

tratio

n ra

tes

Filtr

atio

n ra

te o

f 7.

1m/h

our

Turb

idity

=

<0.2

NTU

Filtr

atio

n ra

te <

7.

1 m

/hr

Turb

idity

=

>0.2

NTU

Filtr

atio

n ra

te

On-

line

At l

east

da

ily

WTP

O

Uni

form

dis

tribu

tion

of fl

ow

Turb

idity

C

olou

r A

udit

E.co

li C

lost

ridi

um

perf

ring

ens

U

neve

n fil

ter

bed

Poor

pe

rfor

man

ce a

s ai

r sco

urer

s are

no

t all

oper

atio

nal

Mod

erat

e/

Maj

or

Air

scou

ring

rate

s 38

.7m

3//h

r at

0.9b

ar

<38.

7m3 /h

r at

less

0.9

bar

A

ir sc

ourin

g ra

tes

On

back

-w

ashi

ng

WTP

O

Ensu

re a

ir sc

oure

rs

perf

orm

eff

icie

ntly

A

udit

Turb

idity

C

olou

r E.

coli

Clo

stri

dium

pe

rfri

ngen

s

Con

tam

inat

ion

of fi

ltrat

e M

anne

sman

line

lo

cate

d cl

ose

to

sept

ic

tank

/soa

kaw

ay

Mod

erat

e/

Mod

erat

e

Sani

tary

inte

grity

of

faci

lity

Min

imum

dis

tanc

e of

10m

from

sept

ic

tank

<10m

Sa

nita

ry

insp

ectio

n A

nnua

l W

TPO

M

ove

sept

ic ta

nk

E.co

li Fa

ecal

st

rept

ococ

ci

Ex

cess

ive

alga

l fo

rmat

ions

B

ack

was

hing

of

filte

rs <

18 h

our

inte

rval

s

Mod

erat

e/

Mod

erat

e Fi

ltrat

ion

rate

s H

ead

loss

7.

7m/h

our

filtra

tion

rate

<7

.7m

/hou

r Fi

ltrat

ion

rate

O

n-lin

e A

t lea

st

daily

WTP

O

Bal

anci

ng fi

ltrat

ion

rate

with

flow

rate

s A

lgal

cel

ls

Col

our

C

ross

co

ntam

inat

ion

of P

ater

son

with

M

anne

sman

Mix

ing

of

filtra

te in

co

ntac

t tan

ks

Like

ly/

Maj

or

Con

trol o

f ch

lorin

e re

sidu

al

prio

r to

inte

rmix

ing

0.2m

g/C

l 2 <0

.2m

g/C

l 2 C

hlor

ine

resi

dual

O

n lin

e

At l

eas

hour

ly

WTP

O

Ensu

re e

ffic

ienc

y of

on

line

chl

orin

ator

s E.

coli

Faec

al

stre

ptoc

occi

Can

dy fi

lters

Ex

cess

ive

alga

e bl

ocki

ng fi

lters

In

crea

sed

air

scou

ring

and

back

was

hing

ev

ery

18-2

4 ho

urs f

or 8

-10

min

utes

Like

ly/

Mod

erat

e C

lean

ing

by a

ir sc

oure

rs a

nd

back

was

hing

and

he

ad lo

ss

Scou

ring

at

36.7

m3 /h

r at 3

bar

B

ackw

ashi

ng a

t 68

m3 /h

r and

hea

d lo

ss a

t 15m

Tu

rbid

ity

<02.

NTU

Scou

ring

at

<36.

7m3 /h

r at 3

ba

r B

ackw

ashi

ng a

t >

68m

3 /hr a

nd h

ead

loss

at >

15m

Tu

rbid

ity

>0.2

NTU

Hea

d-lo

ss

On

line

A

t lea

st

daily

WTP

O

Ensu

ring

clea

ning

un

derta

king

bas

ed o

n he

ad-lo

ss; m

aint

aine

d ai

r sco

urer

s

Turb

idity

C

olou

r E.

coli

Faec

al

stre

ptoc

occi

C

lost

ridi

a pe

rfri

ngen

In

effe

ctiv

e ch

lorin

atio

n In

suff

icie

nt

dosi

ng, b

urie

d lin

e m

akes

leak

de

tect

ion

diff

icul

t

Like

ly/

Cat

astro

phic

R

esid

ual c

hlor

ine

Tu

rbid

ity; p

H

0.2-

0.5m

g/l

resi

dual

chl

orin

e <1

NTU

pH

<8

<0.1

5mg/

l res

idua

l >1

..5N

TU

pH>8

Chl

orin

e do

sing

re

cord

s Fr

ee

chlo

rine

resi

dual

s Tu

rbid

ity

pH

On-

line

At l

east

ho

urly

WTP

O

Hav

ing

func

tioni

ng

dosi

ng e

quip

men

t an

d m

onito

rs o

n in

let

and

outle

t. In

stal

l al

arm

s to

war

n of

do

se re

duct

ion

Turb

idity

E.

coli

Faec

al

stre

ptoc

occi

Chl

orin

atio

n N

o ch

lorin

e do

sing

on

high

le

vel w

ater

No

boos

ter

pum

p U

nlik

ely/

C

atas

troph

ic

Dos

ing

rate

s at

3kg/

hr x

3 fo

r eac

h po

st se

dim

enta

tion

stag

e

3kg/

l per

pum

p <3

kg/l

per p

ump

or p

ump

off l

ine

Chl

orin

e re

sidu

al

On-

line

At l

ast

daily

WTP

O

Ensu

re th

at d

osin

g oc

curs

in h

igh

leve

l cl

earw

ell

E.co

li Fa

ecal

st

rept

ococ

ci

No

back

up

chlo

rine

in c

ase

of fa

ilure

Lack

of H

TH

avai

labl

e as

ba

ck-u

p

Like

ly/

Cat

astro

phic

En

sure

suff

icie

nt

stoc

k of

HTH

H

TH su

pply

su

ffic

ient

for o

ne

mon

th

Less

than

7 d

ays

supp

ly

Stor

es

Dai

ly

WTP

O

Ensu

re st

ores

hol

d su

ffic

ient

stoc

ks o

f H

TH

Aud

it

Wat

er S

afet

y Pl

an: G

aba

II Tr

eatm

ent W

orks

Cri

tical

Lim

its

Mon

itori

ng

Uni

t Pr

oces

s H

azar

d ev

ent

Cau

se

Ris

k C

ontr

ol

Mea

sure

Ta

rget

leve

l

Act

ion

leve

l W

hat

Whe

n W

ho

Cor

rect

ive

Act

ion

Ver

ifica

tion

Sour

ce w

ater

Pr

esen

ce o

f to

xic

cyan

o-ba

cter

ia in

so

urce

wat

er

Nut

rient

en

richm

ent i

n so

urce

wat

ers

Unl

ikel

y/

mod

erat

e C

ontro

l of n

utrie

nt

inpu

ts in

to IM

B

No

visu

al b

lue

gree

n al

gae

Blu

e gr

een

alga

e In

spec

tion

Ass

ess

sour

ce

wat

er

Ann

ually

W

TPO

/ W

QC

D

Sour

ce w

ater

ca

tchm

ent

man

agem

ent p

lan

Insp

ectio

n/

asse

ssm

ent

Inta

ke

Red

uced

flo

w in

to ra

w

wat

er su

mp

Fish

erm

en’s

ne

ts, s

hells

or

othe

r deb

ris

clog

ging

cou

rse

inle

t scr

een

Mod

erat

e/

Cat

astro

phic

In

take

pro

tect

ed

agai

nst d

amag

e w

ith m

inim

al

wat

er le

vel i

n ra

w

wat

er su

mp

of 3

m

Pum

ping

rate

s at

flow

met

er

Wat

er le

vels

in

raw

wat

er su

mp

Dip

test

to 3

m

(tank

is 6

m d

eep)

2

oper

atio

nal

pum

ps @

30

00m

3 /hr

2.5m

2

oper

atio

nal

pum

ps @

<

3000

m3 /h

r

Raw

w

ater

su

mp

leve

ls

Dai

ly

WTP

O

Rem

oval

of n

ets.

Incr

ease

regu

lar

rem

oval

of c

ours

e sc

reen

Aud

it an

d in

spec

tion

Sl

ough

ing

of

alga

e th

roug

h to

ra

w w

ater

su

mp

/ bi

ofilm

fo

rmat

ion

Alg

al fo

rmat

ion

insi

de in

let p

ipe

Unl

ikel

y/

Min

or

Reg

ular

flus

hing

of

inle

t pip

e.

No

biof

ilm

form

atio

n in

pip

e B

reak

thro

ugh

occu

rs

Sani

tary

in

spec

tion

Qua

rterly

W

PTO

R

egul

ar c

lean

ing

of

pipe

redu

ce fr

om 1

2 m

onth

to 6

mon

ths

Insp

ectio

n

Raw

wat

er

sum

p Lo

w le

vels

in

raw

wat

er

sum

p du

e to

bl

ocka

ge o

f sc

reen

s

Inad

equa

te

thro

ugh

flow

re

sulti

ng in

die

of

f of o

rgan

ic

mat

ter i

n ta

nk

Like

ly/

Min

or

Reg

ular

cle

anin

g of

scre

ens

Dip

test

to 3

m

(tank

is 6

m d

eep)

2.

5m

Dip

Tes

t D

aily

W

TPO

R

egul

ar c

lean

ing

of

raw

wat

er sc

reen

s in

crea

sed

from

12

to

6 m

onth

s

Insp

ectio

n; a

udit

of re

cord

s

A

lgal

bl

oom

s le

adin

g to

fis

h dy

ing

in

raw

wat

er

sum

p (o

ccur

red

in

2000

)

Larv

ae g

row

ing

in su

mp

redu

cing

BO

D

Like

ly/

Mod

erat

e R

egul

ar c

lean

ing

of sc

reen

s W

ater

free

of l

arge

or

gani

c or

aqu

atic

lif

e

Pres

ence

of l

arge

or

gani

c/aq

uatic

lif

e

Sani

tary

in

spec

tion

Mon

thly

W

TPO

R

educ

e th

roug

h flo

w

of p

lant

and

incr

ease

co

ntin

uous

cl

arifi

catio

n

Aud

it; E

.col

i, ae

rom

onas

In

crea

sed

iron

leve

ls in

ra

w w

ater

Exce

ssiv

e co

rros

ion

of

cour

se sc

reen

s

Mod

erat

e/

Insi

gnifi

cant

R

egul

ar c

lean

ing

of sc

reen

Ir

on 0

.3m

g/l

Iron

> 0

.3m

g/l

Test

for

iron

Mon

thly

W

TPO

B

leac

hing

/cle

anin

g of

scre

ens

Aud

it, c

usto

mer

co

mpl

aint

s

Tr

ippi

ng o

f ra

w w

ater

pu

mps

and

in

suff

icie

nt

prod

uctio

n

Clo

ggin

g of

sc

reen

s Li

kely

/ C

atas

troph

ic

Cle

an sc

reen

s and

en

sure

cle

ar

3,50

0m3 /h

r at 3

pu

mps

M

inim

al

func

tioni

ng fo

r cl

arifi

ers

2000

m3 /h

r

Insp

ectio

n flo

w ra

te

On

line

A

t lea

st

daily

WTP

O

Reg

ular

cle

anin

g of

sc

reen

s A

udit,

insp

ectio

n

Fa

ilure

in

raw

wat

er

pum

ps a

nd

plan

t fai

lure

Ligh

teni

ng

strik

ing

/ irr

egul

ar p

ower

su

pply

to ra

w

wat

er p

ump

Like

ly/

Cat

astro

phic

Se

cure

stab

le

elec

trici

ty su

pply

41

5 vo

lts fr

om

11kV

A p

ower

<4

15 v

olts

In

spec

tion

On

line

W

TPO

Ea

rth e

lect

ric su

pply

In

stal

l bac

k up

ge

nera

tor;

inst

all

alar

m fo

r pow

er lo

ss

Aud

it, in

spec

tion

Cla

rific

atio

n C

oagu

latio

n Fl

occu

latio

n/

sedi

men

tatio

n

Poor

floc

fo

rmat

ion

and/

or

flood

ing

of

clar

ifier

in

lets

Poor

mix

ing,

in

suff

icie

nt o

r ex

cess

ive

inle

t pr

essu

re fr

om

raw

wat

er

pum

ps

Like

ly/

Maj

or

Effe

ctiv

e m

ixin

g of

coa

gula

nt.

Ret

entio

n tim

e T

= 2.

1 ho

urs

Ret

entio

n tim

e 2.

1 ho

urs,

cont

rolle

d ve

loci

ty

Ret

entio

n tim

e re

duce

d, fl

ow

exce

eds d

esig

n

Flow

rate

, tu

rbid

ity,

insp

ectio

n

Wee

kly

WTP

O

Fix

auto

mat

ic

disc

harg

e le

vels

on

pum

ps

Rai

se c

larif

ier i

nlet

s to

acc

omm

odat

e flo

w

from

pum

ps

Gra

duat

ed/s

lopp

ing

impr

ovem

ent s

to

clar

ifier

inle

ts

Clo

stri

dia

perf

ring

ens

Ret

entio

n tim

e tra

cer t

ests

Po

or fl

oc

form

atio

n in

in

ner p

art o

f cl

arifi

er u

nits

Non

uni

form

di

strib

utio

n an

d m

ixin

g o

f co

agul

ant

Win

d an

d te

mpe

ratu

re

effe

ctin

g m

ixin

g

Like

ly/

Maj

or

Wel

l con

stru

cted

ta

nks a

nd si

nuou

s ch

anne

ls

Min

imum

re

side

nce

time

of

2.1h

rs

<2.1

hrs

Flow

rate

O

n lin

e A

t lea

st

daily

WTP

O

Cov

er ta

nks;

ens

ure

effe

ctiv

e m

ixin

g E.

coli

Clo

stri

dia

perf

ring

ens

Ex

cess

ive

use

of a

lum

ch

emic

als

Inad

equa

te

mix

ing

of a

lum

du

ring

hydr

aulic

rapi

d m

ixin

g La

ck o

f sy

nchr

onis

atio

n of

raw

wat

er

pum

p flo

w a

nd

dosi

ng ra

te

Like

ly/

Insi

gnifi

cant

U

se 5

% so

lutio

n =

> 30

mg/

l mix

ing

30m

g/l

<30m

g/l

Jar t

ests

Tu

rbid

ity

Col

our

Hou

rly

At l

east

da

ily

WTP

O

Incr

ease

or r

educ

e co

agul

ant d

ose

and

resi

denc

e tim

e. A

dd

poly

mer

coa

gula

nt

aid

Jar t

est r

ecor

ds

Dos

ing

reco

rds

Ex

cess

ive

build

up

of

slud

ge/a

lgae

in

cla

rifie

d w

ater

Dea

d en

d in

cl

arifi

er

chan

nels

re

sulti

ng in

ex

cess

ive

flush

ing

in o

f sl

udge

Like

ly/

Min

or

Ensu

re e

ffec

tive

floc

form

atio

n an

d re

mov

al

No

mic

ro-f

loc

carr

y-ov

er

Mic

ro-f

loc

carr

y-ov

er o

bser

vabl

e In

spec

tion

At l

east

w

ekkl

y W

TPO

En

sure

that

rete

ntio

n tim

e is

suff

icie

nt fo

r ef

fect

ive

floc

form

atio

n an

d re

mov

al

Aud

it of

reco

rds

In

adeq

uate

m

ixin

g du

e to

in

suff

icie

nt

slud

ge

blee

ding

In o

pera

tiona

l sl

udge

di

scha

rge

gate

Like

ly/

Min

or

Ensu

re sl

udge

di

scha

rge

gate

op

erat

iona

l and

th

at sl

udge

is

rem

oved

Slud

ge b

leed

ing

occu

rs a

t req

uire

d in

terv

als

Bui

ld-u

p of

un

stab

le sl

udge

bl

anke

t

Insp

ectio

n A

t lea

st

mon

thly

W

TPO

Fi

x sl

udge

dis

char

ge

gate

s A

udit

Ex

cess

ive

alga

l loa

ding

in

cla

rifie

d w

ater

Blo

cked

tri

dent

s dur

ing

clea

ning

Mod

erat

e/

Min

or

Ensu

re tr

iden

ts a

re

not b

lock

ed

No

alga

l bui

ld-u

p in

cla

rifie

d w

ater

In

dica

tion

of a

lgal

bu

ild-u

p in

cl

arifi

ed w

ater

Insp

ectio

n A

t lea

st

mon

thly

W

TPO

In

crea

se fr

eque

ncy

of

unbl

ocki

ng o

f tri

dent

s usi

ng

chlo

rine

and

jet h

ose

to u

nblo

ck tr

iden

ts to

on

ce p

er y

ear r

athe

r th

an o

nce

per 3

yea

rs

Ref

ill ta

nk a

t non

pe

ak d

eman

d tim

e s(

i.e. a

t nig

ht to

giv

e m

ore

time

for c

lose

r in

spec

tion)

Aud

it

Filtr

atio

n Pr

esen

ce o

f co

rrod

ed

debr

is

resu

lting

in

clog

ging

of

filte

rs

Cor

rosi

on o

f sh

eer p

ins d

ue

to a

dditi

on o

f ch

lorin

e af

ter

clar

ifica

tion

Like

ly/

Min

or

Red

uctio

n in

tu

rbid

ity to

<0

.1N

TU

0.2N

TU

>0.2

NTU

Tu

rbid

ity,

flow

rate

D

aily

A

t lea

st

wee

kly

WTP

O

Red

uce

alum

dos

e an

d im

prov

e cl

arifi

catio

n ef

ficie

ncy

Insp

ectio

n, a

udit

Dis

infe

ctio

n In

adeq

uate

di

sinf

ectio

n In

suff

icie

nt

supp

ly o

f Cl 2

gas (

e.g.

2002

no

gas

for 1

m

onth

)

Like

ly/

Cat

astro

phic

En

sure

ade

quat

e C

t val

ue

02.-0

.5m

g/l f

ree

chlo

rine

afte

r 30

min

utes

<0.1

5mg/

l fre

e ch

lorin

e af

ter 3

0 m

inut

es

Chl

orin

e do

sing

re

cord

s Fr

ee

chlo

rine

resi

dual

Hou

rly

WTP

O

Impr

ove

logi

stic

al

supp

ly

Hav

e st

andb

y H

TH

(nee

d a

lot a

s use

>9

00kg

per

day

)

E.co

li Fa

ecal

st

rept

ococ

ci

Ex

cess

ive

chlo

rine

dosi

ng

2 ch

lorin

ator

s (1

on

stan

dby)

@

11k

g/hr

du

ring

time

of

audi

t no

calib

ratio

n re

cord

s av

aila

ble

Like

ly/

Min

or

Prop

er c

ontro

l of

chlo

rine

dosi

ng in

re

spon

se to

ca

lcul

ated

chl

orin

e de

man

d

Tota

l res

idua

l sh

ould

nev

er

exce

ed 5

mg/

l (W

HO

GV

)

Tota

l res

idua

l is

>5m

g/l

Chl

orin

e do

sing

O

n-lin

e A

t lea

st

daily

WTP

O

Impr

ove

dosi

ng a

nd

dem

and

cacl

ulat

ion

Aud

it

Soda

Ash

O

ver d

osin

g of

soda

ash

So

da a

sh

addi

tion

to

wat

er p

H

Like

ly/

Insi

gnifi

cant

pH

6.3

-6.5

or 6

.7-

6.9

but s

oda

ash

still

add

ed

Dos

e ac

cord

ing

to

pH c

orre

ctio

n ne

ed

Dos

ing

carr

ied

out

with

out r

efer

ence

to

pH

adj

ustm

ent

need

s

Dos

ing

reco

rds

Dai

ly

WTP

O

Mor

e re

gula

r m

onito

ring

of so

da

ash

addi

tion

Aud

it

Annex 6: Recording form for field collection of socio-economic data

Improved risk assessment and management in piped water systems: Socio-economic re-assessment data sheets

Record Sheet Parish: Sector No: Cluster Number: HOUSING UNIT TYPE (tick appropriate box) Detached House

Servants Quarters

Semi-detached

Hut

Tenement Muzigo

Other

Flat

ROOF MATERIAL TYPE (tick appropriate box) Iron Sheet

Papyrus

Tiles

Grass

Asbestos

Banana Leaves/Fibre

Concrete

Other

WALL MATERIAL (tick appropriate box) Burnt Stabilised Brick

Unburnt Bricks

Stone

Pole and Mud

Concrete

Wood

Cement Blocks

Other

Annex 7: Output to purpose review

OU

TPU

T TO

PU

RPO

SE S

UM

MA

RY R

EPO

RT

Title

: Im

prov

ed ri

sk a

sses

smen

t and

man

agem

ent i

n ur

ban

pipe

d w

ater

supp

ly C

ount

ry: U

gand

a, In

dia

and

UK

MIS

COD

E:

Repo

rt N

o. 2

D

ate:

30/

09/0

2 Pr

ojec

t sta

rt da

te: 0

2/10

/01

Proj

ect e

nd d

ate:

31/

03/0

4 St

age

of p

roje

ct:

Pilo

t sta

ge, K

ampa

la

Proj

ect F

ram

ewor

k G

oal s

tate

men

t: W

4 - W

ater

and

San

itatio

n (ra

ise th

e w

ell-b

eing

of t

he u

rban

and

rura

l poo

r thr

ough

impr

oved

wat

er su

pply

and

sani

tatio

n)

Purp

ose

state

men

t: To

impr

ove

the

man

agem

ent a

nd m

onito

ring

of w

ater

qua

lity

in u

rban

pip

ed w

ater

supp

lies i

n a

cost

-eff

ectiv

e, su

stai

nabl

e an

d eq

uita

ble

man

ner t

hrou

gh im

prov

ed ri

sk a

sses

smen

t and

ope

ratio

n.

Out

puts:

O

VIs

: Pr

ogre

ss:

Reco

mm

enda

tion/

actio

ns:

Ratin

g:

1. G

uida

nce

of

asse

ssin

g ha

zard

s, co

ntro

l po

ints

, ve

rific

atio

n an

d de

velo

pmen

t of

wat

er sa

fety

pl

ans

Gui

danc

e do

cum

ent

avai

labl

e in

dra

ft fo

rm b

y m

id-2

003

and

in fi

nal f

orm

by

ear

ly 2

004

Som

e of

mat

eria

l for

this

guid

ance

doc

umen

t is

incl

uded

with

in th

e W

HO

doc

umen

t on

Wat

er

Safe

ty P

lans

that

has

bee

n th

roug

h pe

er-re

view

an

d is

now

bei

ng fi

nalis

ed fo

r pub

licat

ion.

Th

e gu

idel

ines

dev

elop

ed b

y th

e pr

ojec

t hav

e la

rgel

y be

en p

repa

red

and

will

be

final

ised

late

r th

is ye

ar. C

omm

ents

have

bee

n re

ceiv

ed fr

om

expe

rts in

Syd

ney

Wat

er a

nd M

elbo

urne

Wat

er,

who

bot

h ap

ply

the

wat

er sa

fety

pla

n ap

proa

ch. I

t is

expe

cted

that

the

guid

elin

es w

ill b

e av

aila

ble

in

early

200

3 ah

ead

of th

e pl

anne

d sc

hedu

le re

ady

for f

urth

er te

sting

in U

gand

a an

d In

dia.

The

guid

ance

man

uals

will

be

com

plet

ed b

y Fe

brua

ry 2

003,

read

y fo

r tes

ting

in U

gand

a by

NW

SC a

nd

in In

dia.

Fin

alisa

tion

will

take

into

ac

coun

t fee

dbac

k fro

m fi

eld

testi

ng

and

supp

orte

d by

cas

e stu

dies

. Som

e of

the

mat

eria

l will

be

incl

uded

in a

n in

vite

d pr

esen

tatio

n at

a w

ater

safe

ty

conf

eren

ce in

Ber

lin, F

ebru

ary

2003

.

2. M

anua

l of

flow

-cha

rts a

nd

deci

sion

-tree

s fo

r wat

er q

ualit

y m

anag

emen

t and

m

onito

ring

Use

r-fr

iend

ly

man

ual a

vaila

ble

in d

raft

form

by

end

2001

and

in

final

form

by

mid

-20

03

This

mat

eria

l is i

ncor

pora

ted

with

in th

e dr

aft

wat

er sa

fety

pla

n do

cum

ent u

sed

as th

e ba

sis fo

r de

velo

ping

the

wat

er sa

fety

pla

n fo

r Kam

pala

. Th

is w

as se

nt to

exp

erts

in S

ydne

y W

ater

and

M

elbo

urne

Wat

er a

nd fa

vour

able

com

men

ts w

ere

rece

ived

.

The

final

doc

umen

t will

incl

ude

case

stud

ies.

The

seco

nd w

ater

qu

ality

ass

essm

ent a

nd e

valu

atio

n of

th

e ef

ficac

y of

the

diffe

rent

in

dica

tors

will

also

be

incl

uded

. Th

is do

cum

ent w

ill fo

rm th

e ba

sis o

f an

invi

ted

pres

enta

tion

by th

e pr

ojec

t man

ager

at t

he w

ater

safe

ty

conf

eren

ce in

Ber

lin, 2

003.

3. P

C

com

patib

le

softw

are

for

pred

ictin

g im

pact

on

wat

er

qual

ity w

ithin

di

strib

utio

n sy

stem

s

CD

-RO

M b

ased

m

odel

ling

softw

are

linke

d to

de

cisi

on-m

akin

g pr

oces

s ava

ilabl

e in

ear

ly 2

004

The

cont

amin

ant s

eepa

ge a

nd in

gres

s mod

els a

re

com

plet

ed a

nd h

ave

been

teste

d w

ith li

mite

d ex

istin

g da

ta. T

he c

harg

ing

mod

el fo

r ful

ly

char

ged

syste

m is

now

read

y fo

r tes

ting.

The

co

ntam

inan

t cha

rgin

g m

odel

for i

nter

mitt

ent

syste

ms i

s bei

ng d

evel

oped

and

shou

ld b

e co

mpl

eted

by

early

200

3 re

ady

for t

estin

g.

The

cont

amin

ant s

eepa

ge a

nd

ingr

ess m

odel

s and

the

cont

amin

ant

prop

agat

ion

mod

el fo

r ful

ly-c

harg

ed

syste

ms a

re n

ow re

ady

for f

ull f

ield

-te

sting

and

it is

pla

nned

to u

se th

ese

in K

ampa

la b

y th

e en

d of

200

2. T

he

mod

el fo

r con

tam

inan

t pro

paga

tion

in in

term

itten

t sup

plie

s is u

nder

de

velo

pmen

t and

shou

ld b

e co

mpl

eted

in e

arly

200

3 re

ady

for

testi

ng.

4. G

IS-b

ased

ris

k m

anag

emen

t to

ol fo

r haz

ard

asse

ssm

ent a

nd

wat

er q

ualit

y m

odel

ling

Use

r-fr

iend

ly G

IS

base

d ris

k m

anag

emen

t m

odel

ava

ilabl

e on

C

D a

nd in

tern

et b

y ea

rly 2

004

The

risk

asse

ssm

ent a

nd m

anag

emen

t too

ls fo

r K

ampa

la (t

he ri

sk, v

ulne

rabi

lity

and

haza

rd

map

s) a

re a

ll ba

sed

in A

utoC

AD

and

are

th

eref

ore

alre

ady

GIS

bas

ed. W

ork

is be

ing

initi

ated

on

deve

lopm

ent o

f a sy

stem

usin

g pu

blic

do

mai

n G

IS so

ftwar

e, le

d by

IITM

.

The

GIS

mod

el w

ill re

quire

furth

er

deve

lopm

ent o

ver t

he n

ext 6

-m

onth

s. Th

e w

ater

qua

lity

mod

els

deve

lope

d un

der o

utpu

t 3 a

nd th

e sy

stem

risk

map

pro

duce

d in

out

put

2 ar

e al

l key

inpu

ts in

to th

e G

IS

tool

. It i

s exp

ecte

d th

at a

func

tiona

l ve

rsio

n of

the

publ

ic d

omai

n G

IS

tool

will

be

avai

labl

e by

mid

-200

3.

5. P

erfo

rman

ce

indi

cato

rs fo

r w

ater

qua

lity

and

risk

man

agem

ent

Perf

orm

ance

in

dica

tors

pre

pare

d in

Uga

nda

and

Indi

a.

This

outp

ut w

ill b

e m

et la

ter w

ithin

the

proj

ect,

as it

will

requ

ire fu

rther

con

sulta

tion

amon

g sta

keho

lder

s in

each

cou

ntry

. How

ever

, exi

sting

ex

perie

nce

is be

ing

revi

ewed

.

Perfo

rman

ce in

dica

tors

are

bei

ng

iden

tifie

d as

the

field

rese

arch

pr

ogre

sses

. Fur

ther

act

ion

will

be

driv

en b

y th

e re

sults

of t

he fi

eld

testi

ng.

Purp

ose:

To

impr

ove

the

man

agem

ent a

nd

mon

itorin

g of

w

ater

qua

lity

in

urba

n pi

ped

wat

er su

pplie

s in

a co

st-e

ffec

tive,

su

stai

nabl

e an

d eq

uita

ble

man

ner t

hrou

gh

impr

oved

risk

as

sess

men

t and

op

erat

ion.

OV

Is

Impr

oved

op

erat

ion

and

m

anag

emen

t of

wat

er q

ualit

y in

pi

ped

wat

er

supp

lies

Incr

easi

ng u

se o

f ris

k as

sess

men

t ap

proa

ch to

wat

er

qual

ity

man

agem

ent

Red

uced

ineq

uity

in

allo

catio

n of

ris

ks in

supp

ly

Prog

ress

: Th

e de

velo

pmen

t of t

he w

ater

safe

ty p

lan

and

asso

ciat

ed ri

sk m

aps h

as a

lread

y de

mon

strat

ed to

N

WSC

that

mon

itorin

g ca

n be

mad

e m

ore

cost-

effe

ctiv

e. T

he u

se o

f thi

s app

roac

h is

also

yi

eldi

ng b

enef

its to

the

wat

er q

ualit

y co

ntro

l de

partm

ent a

s the

y ar

e be

ginn

ing

to b

ecom

e m

ore

know

ledg

eabl

e ab

out t

he K

ampa

la sy

stem

an

d un

ders

tand

mor

e cl

early

whe

re th

e m

ost

signi

fican

t pro

blem

s exi

st. T

he w

ater

qua

lity

asse

ssm

ent i

s dem

onstr

atin

g th

at te

sting

of a

w

ide-

rang

e of

indi

cato

rs y

ield

s sig

nific

ant g

reat

er

info

rmat

ion,

eve

n if

sam

plin

g fre

quen

cies

are

lo

wer

. Th

e ac

tive

parti

cipa

tion

of O

ND

EO a

nd th

e lin

k to

ope

ratio

nal m

anag

emen

t has

alre

ady

dem

onstr

ated

the

valu

e of

this

rese

arch

and

the

final

out

puts

are

expe

cted

to su

ppor

t im

prov

ed

man

agem

ent a

nd o

pera

tion

of p

iped

wat

er

supp

lies.

NW

SC h

ave

expr

esse

d a

will

ingn

ess t

o ap

ply

the

wat

er sa

fety

pla

n ap

proa

ch in

thei

r oth

er

supp

lies,

depe

ndin

g on

agr

eem

ent w

ith se

nior

m

anag

emen

t and

futu

re re

gula

tors

. Th

e so

cio-

econ

omic

dat

a an

d th

e de

velo

pmen

t of

the

shar

ed ri

sk m

anag

emen

t com

pone

nt o

f the

re

sear

ch sh

ould

con

tribu

te to

a re

duct

ion

in

uneq

ual e

xpos

ure

to ri

sks.

Reco

mm

enda

tions

/act

ion

Th

e fin

alisa

tion

and

pres

enta

tion

of

the

Kam

pala

wat

er sa

fety

pla

n is

an

impo

rtant

mile

stone

in p

rom

otin

g th

e us

e of

this

appr

oach

. The

de

velo

pmen

t of f

urth

er p

lans

und

er

the

guid

ance

of t

he U

K re

sear

ch

team

is re

quire

d to

con

solid

ate

the

use

of w

ater

safe

ty p

lans

in N

WSC

. Fu

rther

mor

e, th

e ex

pans

ion

of th

e ap

proa

ch to

Indi

a w

ill p

rovi

de

furth

er in

form

atio

n an

d ca

se st

udie

s. Th

e te

sting

and

refin

emen

t of t

he

mod

els a

nd G

IS to

ols i

s an

impo

rtant

prio

rity

in th

e ne

xt 6

m

onth

s, as

thes

e w

ill st

reng

then

the

pred

ictiv

e po

wer

of t

he w

ater

safe

ty

plan

s and

supp

ort i

mpr

oved

op

erat

ion.

Th

e 3rd

edi

tion

of th

e W

HO

G

uide

lines

for D

rinki

ng-W

ater

Q

ualit

y to

be

publ

ished

in 2

003

is ba

sed

on th

e w

ater

safe

ty p

lan

appr

oach

for m

icro

bial

qua

lity

and

this

will

pro

vide

furth

er su

ppor

t to

mee

ting

the

purp

ose.