1. NAMWA The Dutch system of Water Accounts
Sjoerd Schenau
CBS (Statistics Netherlands)
National Accounts

2. Contents 1. Introduction 2. NAMWA 3. Current state of the art
Environmental accounting
2. NAMWA
Scope and methods
3. Current state of the art
The Dutch NAMWA and applications
4. International work

3. What is NAMWA?
National Accounting Matrix including Water Accounts (NAMWA)
Environmental accounting
System of National Accounts (SNA)

4. 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

5. What is environmental accounting ?Wa
What is environmental accounting ?
ECONOMY
ENVIRONMENT

6. 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

7. Environmental statistics
National Accounts
Environmental
accounting !!!!
Social statistics
Environmental statistics

8. 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
Emissions abroad are included !!
Environmental – economic analyses

9. 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

10. Work on NAMWA in the Netherlands
Based on an experimental NAMWA published in 1996
Collaboration between RIZA and Statistics Netherlands
2002: Extension of original NAMWA
: further extension: addition of more pollutants, more detail for river basins

11. Scale: National and River Basins

13. 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

14. NAMWA : the matrix Account nr 1-10 11 12 13 14
NAM (economic); mln Euros
Water balance; mln m3
Emission balance; kg

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

16. Economic production

17. 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.

18. Origin of pollutants P N Heavy metals Waste water Consumers x
x x x x x
Producers
Agriculture
Fisheries
Mining
etc
Input from abroad
Total

19. Destination of pollutants
Heavy metals
Waste water
Absorption x
x x x x x
Export abroad
Env. indicators
eutrophication
Total

20. Distribution emissions over the industries (2000)

21. GDP and environmental indicators: national

22. GDP and environmental indicators : SCHELD

23. 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

24. Use of water in 2001

25. Results so far National NAMWA for 1996 t/m 2003
Regional NAMWA for 1996 t/m 2002

26. Usefulness of NAMWA for WFD (1)
NAMWA provides a consistent integrated economic- environmental accounting framework which provides
information about:
- Intensity of water use by branches of industry
- The physical flows of supply of water services
- Production costs of water services
- Environmental taxes related to water
at National and River Basin level

27. Usefulness of NAMWA for WFD (2)
Hence NAMWA provides indicators about:
- Extent and relative significance of water services
- Extent and relative significance of water use
- Cost recovery
- Application of Polluter Pays Principle

28. Future work NAMWA as a regular ‘product’ from 2002 onwards
Calculate data for
Waterbalance every year
Composition of indicators
Publication of the data (also on the internet)