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

NAMWA
The Dutch system of Water Accounts
Sjoerd Schenau
CBS (Statistics Netherlands)
National Accounts
Contents
1. Introduction
Environmental accounting
2. NAMWA
Scope and methods
3. Current state of the art
The Dutch NAMWA and applications
4. International work
What is NAMWA?
National Accounting Matrix including
Water Accounts (NAMWA)
Environmental accounting
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
What is environmental accounting ?
Wa
ECONOMY
ENVIRONMENT
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
Environmental
accounting !!!!
Social statistics
Environmental statistics
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
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
Netherlands
• Based on an experimental NAMWA published
in 1996
• Collaboration between RIZA and Statistics
Netherlands
• 2002: Extension of original NAMWA
• 2003-2005: further extension: addition of
more pollutants, more detail for river basins
Scale: 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 matrix
Account nr 1-10
1-10
NAM (economic); mln
Euros
11 Water balance; mln m3
12 Emission balance; kg
13 Water balance; mln m3
14 Emission balance; kg
11
12
13
14
Distribution of economic value added
generated in the various river basins
in the Netherlands
Rhine west
Rhine mid
Rhine east
Rhine north
Meuse
3%
3%
21%
50%
5%
10%
8%
Scheldt
Ems
Economic production 1996-2000
140
130
120
nationaal
rijnwest
rijnmidden
rijnnoord
rijnoost
110
100
90
80
1996
1997
1998
1999
2000
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
Input from abroad
x
x
x x x x x
x
Total
x
x
x x x x x
x
x
x
x
x
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
x
x
Env. indicators
–eutrophication
–Waste water
–Heavy metals
Total
x
x x x x x
x
x
x x x x x
x
Distribution emissions over the
industries (2000)
100%
80%
other
transport
60%
environmental services
industry
40%
agriculture
households
20%
0%
As Cd Cr
Cu Hg Pb
Ni
Zn
P
N
GDP and environmental
indicators: national
130
125
120
115
wastewater
nutrients
heavy metals
GDP
110
105
100
95
90
85
80
1996
1997
1998
1999
2000
2001
GDP and environmental indicators :
SCHELD
140
130
120
110
wastewater
nutrients
heavy metals
GDP
100
90
80
70
60
1996
1997
1998
1999
2000
2001
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
100%
90%
80%
SCHELD
70%
MEUSE
60%
EEMS
50%
MID
EAST
40%
NORD
30%
WEST
20%
10%
0%
tapwater
sweet
groundwater
brackish
groundwater
sweet surface
water
salt
surfacewater
Results so far
• National NAMWA for 1996 t/m 2003
• Regional NAMWA for 1996 t/m 2002
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
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
Future work
• NAMWA as a regular ‘product’ from 2002
onwards
• Calculate data for 1990-1995
• Waterbalance every year
• Composition of indicators
• Publication of the data (also on the internet)