Is Desalination Our Future?

April, 2010

Paul HellikerGeneral Manager

Marin Municipal Water District

“If we could produce fresh water from salt water at a low cost, that would indeed be a great service to humanity and would dwarf any other scientific accomplishment.”

JFK - 1962

Water Stress Globally

IPCC, 2008

15 Model Runs: 2080-99 compared to 1980-99

Climate Model Predictions

Climate Skeptic Theories

Trends in Runoff TimingD

WR

, 200

7

Precipitation Variability

DWR, 2007

CA Snowpack Predictions

DWR, 2010

L. F

lint,

20

09Projected Runoff Changes

L. Flint, 2009

Projected Runoff Changes

DW

R, 2

010

DW

R, 2

010

“All I’m saying is now is the time to develop a technology to deflect an asteroid”

Lessons from the Past

DWR, 2010

Strategies for Water Resources

Desalination: Israel

FACILITIES:

Hadera (92)

Palmachim (33)

Soreq (108)

Ashdod (72)

Ashkelon (83)

Plant Location Capacity (MGD)

% of Supply

Startup Cost

Gold Coast

Brisbane 33/44 27 2009 $1.30 B

Perth Perth 38/66 17 2006 $420 M

Kurnell Sydney 66/132 15 2010 $2.06 B

Southern Perth/

Bunbury

13/26 20 2011 $1.04 B

Wonthaggi Melbourne 108/145 33 2012 $3.80 B

Port Stanvac

Adelaide 71 50 2012 $1.98 B

Desalination in Australia

Gold Coast

Kurnell

WonthaggiPort Stanvac

SouthernPerth

Desalination in Australia

Desalination in Spain

20 new plants planned for the SE

Will double the capacity in Spain

Will provide about 50% of the area’s water need

Current Desalination Facilities

Proposed Plants in CA

20+ new plants planned

425 MGD of capacity proposed (= to 20% of MWD daily)

Largest in Southern California

Zone 7

SCVWD

ACWD

SFPUC

MMWD

EBMUD

CCWD

SCWA Solano CWA

Water Supply in SF Bay Area

Mix of Wholesale and Retail Agencies

MMWD Supplies from Local Reservoirs (75%) and Russian River (22%)

Sources of Water

NHOME DEPOT

SHORELINE P

ARKWAY

HWY 580

TO SAN RAFAEL

NORTHSAN FRANCISCO

BAY

HWY 580

TO RICHMOND

24” DESALINATEDWATER PIPELINE TO

MMWD DISTRIBUTION

36” SOURCE WATER PIPELINE

MMWD

DESALINATIO

N

FACILIT

Y

EXISTING MMWD PELICAN WAY STORAGE SITE

36” INTAKE PIPELINE

UNDER PIER

FULL SCALE FACILITY INTAKE SCREENS AND

PUMP STATION

24” BRINE PIPELINE

BRINE PIPELINE CONNECTS TO EXISTING CMSA VALVE BOX

CENTRAL MARINSANITATION

AGENCY (CMSA)EXISTING CMSA EFFLUENT PIPELINE

EXISTING CMSA OUTFALL (8,600 FT. +/-)

TO SIR

FRANCIS

DRAKE

N

PACIFIC OCEAN

SAN FRANCISCO

BAY

PROJECTLOCATION

MMWD Full Scale Desalination Project