NAMWA

The Dutch system of Water AccountsThe Dutch system of Water Accounts

Sjoerd Schenau

CBS (Statistics Netherlands)

National Accounts

Contents

1. 1. IntroductionEnvironmental accounting

2. 2. NAMWANAMWAScope and methods

3. 3. Current state of the artCurrent state of the art

The Dutch NAMWA and applications

4. 4. International workInternational work

What is NAMWA?What is NAMWA?

National Accounting Matrix including National Accounting Matrix including Water Accounts (NAMWA)Water Accounts (NAMWA)

Environmental accountingEnvironmental accounting

System of National Accounts (SNA)System of National Accounts (SNA)

National Accounts:

1. Detailed description of the national economy:

accounts, balance sheets

2. Key aggregate macroeconomic indicators (GDP, NI etc.)

based on internationally agreed definitions, accounting rules: SNA’93, ESA

Wa

ECONOMY ENVIRONMENT

What is environmental accounting ?

Environmental accounts

• The environmental accounts are a statistical framework that describe the relation between the economy and the environment

• The environmental accounts are composed in all EU member states according to the same rules

• In the environmental accounts pollutants are allocated to the different indutsries (NACE) and households

National Accounts

Social statistics Environmental statistics

Environmental accounting !!!!

Defenitions of Environmental accounting (SEEA)

Satelite account of the National Accounts The environmental acocunts are made according to the definitions of National accounts

Resident principle

Environmental – economic analyses

Emissions abroad are included !!

Environmental accounts

– Air emission accounts– Energy accounts– Material flow accounts– subsoil accounts– Waste accounts– Land use accounts– Water emission accounts– Water asset accounts– Water flow accounts

Work on NAMWA in the Work on NAMWA in the NetherlandsNetherlands

• Based on an experimental NAMWA published Based on an experimental NAMWA published in 1996in 1996

• Collaboration between RIZA and Statistics Collaboration between RIZA and Statistics NetherlandsNetherlands

• 2002: Extension of original NAMWA2002: Extension of original NAMWA• 2003-2005: further extension: addition of 2003-2005: further extension: addition of

more pollutants, more detail for river basinsmore pollutants, more detail for river basins

Scale: National and River BasinsScale: National and River Basins

Economic parameters

– National: overview of the expenses (vertical) and receipts (horizontal) with specific attention to water (waterboards, sewage taxes etc.)

– Regional: production, use, value added, number of employees per industry

NAMWA : the matrixNAMWA : the matrix

Account nr 1-10 11 12 13 14

1-10NAM (economic); mln Euros

       

11Water balance; mln m3

       

12 Emission balance; kg        

13Water balance; mln m3        

14 Emission balance; kg        

Distribution of economic value added generated in the various river basins in the Netherlands

50%

8%

10%

5%

21%

3%

3%

Rhine west Rhine mid Rhine east Rhine north Meuse Scheldt Ems

Economic production 1996-2000

80

90

100

110

120

130

140

1996 1997 1998 1999 2000

nationaal

rijnwest

rijnmidden

rijnnoord

rijnoost

Emission accounts

– National en regional emission registration

– overview of the production and absorption of emissions by the industries

– 78 substances: o.a. P, N, heavy metals, pesticides etc.

Origin of pollutants

P N Heavy metals Waste water

Consumers x x x x x x x x

Producers–Agriculture–Fisheries–Mining–etc

x

x

x

x

x

x

x

x

x x x x x

x x x x x

x x x x x

x x x x x

x

x

x

x

Input from abroad x x x x x x x x

Total x x x x x x x x

Destination of pollutants

P N Heavy metals Waste water

Absorption x x x x x x x x

Export abroad x x x x x x x x

Env. indicators–eutrophication–Waste water–Heavy metals

x x

x x x x x

x

Total x x x x x x x x

Distribution emissions over the industries (2000)

0%

20%

40%

60%

80%

100%

As Cd Cr Cu Hg Pb Ni Zn P N

other

transport

environmental services

industry

agriculture

households

GDP and environmental indicators: national

80

85

90

95

100

105

110

115

120

125

130

1996 1997 1998 1999 2000 2001

wastewater

nutrients

heavy metals

GDP

GDP and environmental indicators : SCHELD

60

70

80

90

100

110

120

130

140

1996 1997 1998 1999 2000 2001

wastewater

nutrients

heavy metals

GDP

Water accounts

• Water survey from the CBS (national and regional)

• every 5 years

• production and use of fresh water (ground-, surface- en drinking water) per NACE

Use of water in 2001

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

tapwater sweetgroundwater

brackishgroundwater

sweet surfacewater

saltsurfacewater

SCHELD

MEUSE

EEMS

MID

EAST

NORD

WEST

Results so far

• National NAMWA for 1996 t/m 2003

• Regional NAMWA for 1996 t/m 2002

Usefulness of NAMWA for WFD (1)Usefulness of NAMWA for WFD (1)

NAMWA provides a NAMWA provides a consistentconsistent integrated economic- integrated economic- environmental accounting framework which providesenvironmental accounting framework which provides

information about:information about:

- Intensity of water use by branches of industry- Intensity of water use by branches of industry

- The physical flows of supply of water services- The physical flows of supply of water services

- Production costs of water services- Production costs of water services

- Environmental taxes related to water- Environmental taxes related to water

at National and River Basin levelat National and River Basin level

Usefulness of NAMWA for WFD (2)Usefulness of NAMWA for WFD (2)

Hence NAMWA provides indicators about:Hence NAMWA provides indicators about:

- Extent and relative significance of - Extent and relative significance of

water serviceswater services

- Extent and relative significance of - Extent and relative significance of

water usewater use

- Cost recovery- Cost recovery

- Application of Polluter Pays Principle- Application of Polluter Pays Principle

Future workFuture work

• NAMWA as a regular ‘product’ from NAMWA as a regular ‘product’ from

2002 onwards2002 onwards

• Calculate data for 1990-1995Calculate data for 1990-1995

• Waterbalance every yearWaterbalance every year

• Composition of indicatorsComposition of indicators

• Publication of the data (also on the Publication of the data (also on the

internet)internet)