Waterwinning en waterverbruik bij doelgroepen. Tevens achtergronddocumentatie van de nationale Milieuverkenning 1997-2020
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Type
Report
Language
nl
Date
1999-02-03
Research Projects
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Journal Issue
Title
Waterwinning en waterverbruik bij doelgroepen.
Tevens achtergronddocumentatie van de nationale Milieuverkenning
1997-2020
Translated Title
Analysis of Water abstraction and Water demand in
the Netherlands
Published in
Abstract
Voor de onderbouwing van het beleid, alsmede voor een
bijdrage aan Milieuverkenning 4 is een analyse uitgevoerd van het historisch
waterverbruik en de daarbij behorende winning van grond- en
oppervlaktewater. Om inzicht in de toekomstige ontwikkelingen te krijgen
zijn tevens prognoses opgesteld. Verschillende categorien verbruikers zijn
beschouwd, zoals huishoudens, industrie en het sterk groeiende klein
zakelijk verbruik. Onderscheid is daarbij ook gemaakt naar eigen
voorzieningen en openbare watervoorziening. In het bijzonder voor het
waterverbruik van consumenten is nader ingegaan op specifieke
deelverbruiken. Op basis van scenario's van demografische, technologische
en economische ontwikkelingen en de specifieke waterverbruiken bij
verschillende doelgroepen zijn de prognoses opgesteld. Door vooral de
toepassing van waterbesparende voorzieningen zal het specifiek huishoudelijk
waterverbruik blijven afnemen in de komende decennia. Ondanks een
vooralsnog verwachte groei van de bevolking zal het huishoudelijk verbruik
een, sinds ongeveer 1990 ingezette, dalende trend te zien blijven geven.
Sinds medio jaren zeventig is door strenge eisen gesteld aan de lozing van
effluent op oppervlaktewater en hogere zuiveringslasten, een dalende trend
ingezet van het waterverbruik bij de industrie. De verwachting is dat, mede
in verband met de reeds gerealiseerde grote besparingen op koelwatergebruik,
besparingen op het waterverbruik bij de industrie in de komende decennia
minder groot zullen zijn dan in de afgelopen jaren. De heterogene
samenstelling van de klein zakelijke waterverbruikers is er de oorzaak van
dat van deze categorie weinig detail informatie beschikbaar kwam. Mede
hierom kon per doelgroep geen prognose worden opgesteld en werd een diagnose
slechts voor recreatie uitgevoerd..Door het sinds medio jaren zeventig
stringentere beleid ten aanzien van grondwaterwinning voor laagwaardige
doeleinden is ook in de landbouw de sterke groei in de toepassing ervan bij
beregening afgenomen. Ook een verwachte verdere inkrimping van de veestapel
zal het waterverbruik doen verminderen. In de beschouwde CPB-scenario's is,
afhankelijk van de mate waarin dergelijke ontwikkelingen zich zullen
voordoen, enerzijds nog een stijgend verbruik en anderzijds een dalend
verbruik te onderkennen
Research into water consumption by various consumer categories is at present being carried out to support and sustain implementation of the governmental policy . In this overview of the results of water abstraction analyses and demand in the Netherlands, emphasis has been put on quantitative aspects. In general terms, water use can be divided into consumptive uses, of which a significant share of total supply does not return directly to its source (i.e. household, industry, agriculture) and non-consumptive uses, of which practically the entire volume returns to surface water or groundwater (e.g. cooling). In 1996 around 12,000,000,000 m3 groundwater and surface water were abstracted. Of the total abstracted water, around 54% was fresh and the rest was brackish/saline water. Of the total brackish/saline water, 70% was used as cooling water for electricity plants; this figure was 40% for fresh (surface) water. The total abstracted fresh groundwater in the Netherlands has been used for public water supply (69%), industry (15%), small businesses (4%) and agriculture (12%, mostly for sprinkling). Measured as specific water demand (litres per capita per day), domestic water use has increased. This happened especially between 1960 to 1975 (at 108 litres per capita per day). Since about 1990 it has decreased. In 1995 the level was 138 litres per cap. per day. Forecasts indicate a continuing population growth. Specific water demand is expected to decline; however, relatively little in the first ten years, reflecting the use of more water-saving appliances. Up to now industrial water demand was shown in relation to industrial production. The strong economic growth after 1960 introduced an increased water demand up to 1975. Stricter controls and charges on effluents encourage industries to reduce water demand. Forecasting industrial water is done on the basis of results from several branches of industry (e.g. paper industry) and the scenarios of the production level. The future production level of existing plants is taken from an economic model of the Netherlands Bureau for Economic Policy Analysis. All scenarios show a growth in the industrial water demand. Agricultural uses of water refer only to water supplied by the public water companies and direct water supply from groundwater abstraction, especially for sprinkling systems. Public water supply is important for cleaning some kinds of equipment (health aspects) and for livestock, although this use is expected to decrease in volume and in time due to diminishing livestock numbers.
Research into water consumption by various consumer categories is at present being carried out to support and sustain implementation of the governmental policy . In this overview of the results of water abstraction analyses and demand in the Netherlands, emphasis has been put on quantitative aspects. In general terms, water use can be divided into consumptive uses, of which a significant share of total supply does not return directly to its source (i.e. household, industry, agriculture) and non-consumptive uses, of which practically the entire volume returns to surface water or groundwater (e.g. cooling). In 1996 around 12,000,000,000 m3 groundwater and surface water were abstracted. Of the total abstracted water, around 54% was fresh and the rest was brackish/saline water. Of the total brackish/saline water, 70% was used as cooling water for electricity plants; this figure was 40% for fresh (surface) water. The total abstracted fresh groundwater in the Netherlands has been used for public water supply (69%), industry (15%), small businesses (4%) and agriculture (12%, mostly for sprinkling). Measured as specific water demand (litres per capita per day), domestic water use has increased. This happened especially between 1960 to 1975 (at 108 litres per capita per day). Since about 1990 it has decreased. In 1995 the level was 138 litres per cap. per day. Forecasts indicate a continuing population growth. Specific water demand is expected to decline; however, relatively little in the first ten years, reflecting the use of more water-saving appliances. Up to now industrial water demand was shown in relation to industrial production. The strong economic growth after 1960 introduced an increased water demand up to 1975. Stricter controls and charges on effluents encourage industries to reduce water demand. Forecasting industrial water is done on the basis of results from several branches of industry (e.g. paper industry) and the scenarios of the production level. The future production level of existing plants is taken from an economic model of the Netherlands Bureau for Economic Policy Analysis. All scenarios show a growth in the industrial water demand. Agricultural uses of water refer only to water supplied by the public water companies and direct water supply from groundwater abstraction, especially for sprinkling systems. Public water supply is important for cleaning some kinds of equipment (health aspects) and for livestock, although this use is expected to decrease in volume and in time due to diminishing livestock numbers.
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