1 Europe’s water – an indicator-based assessment Niels Thyssen.

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Presentation transcript:

1 Europe’s water – an indicator-based assessment Niels Thyssen

2 Issues to be addressed Ecological quality Nutrients and organic pollution Hazardous substances Water quantity Information

3 Main findings and key messages Ecological quality  There is a large gap between what is required by the Water Framework Directive in terms of monitoring and classification of ecological status, and what is currently undertaken by countries. River water quality in Europe is improving in most countries.  The impact of agriculture on Europe’s water resources will have to be reduced if good surface water status and good groundwater status are to be achieved. This will require the integration of environmental and agricultural policies at a European level.  There is a large nitrogen surplus in the agricultural soils of EU countries that can potentially pollute both surface and groundwaters.

4 Main findings and key messages Nutrients and organic pollution Wastewater treatment in all parts of Europe has improved significantly since the 1980s. The quality of Europe’s rivers and lakes has improved markedly during the 1990s as a result of the reduction in loads of organic matter and phosphorus from wastewater treatment and industry.  Nitrate concentrations in rivers have remained relatively stable throughout the 1990s and are highest in those western European countries where agriculture is most intensive. The quality of Europe’s rivers and lakes has improved markedly during the 1990s as a result of the reduction in loads of organic matter and phosphorus from wastewater treatment and industry. Loads of both phosphorus and nitrogen from all quantified sources to the North Sea and Baltic Sea have decreased since the 1980s.  Nutrient concentrations in Europe’s seas have generally remained stable over recent years, though a few stations in the Baltic, Black and North Seas have demonstrated a slight decrease in nitrate and phosphate concentrations.

5 Main findings and key messages Nutrients and organic pollution  A smaller number of stations in the Baltic and North Seas showed an increase in phosphate concentrations.  There is no evidence of a decrease (or increase) in levels of nitrate in Europe’s groundwater.  Nitrate in drinking water is a common problem across Europe, particularly from shallow wells. The quality of designated bathing waters (coastal and inland) has improved in Europe throughout the 1990s.  Despite this improvement, 10 % of Europe’s coastal and 28 % of inland bathing waters do not meet (non-mandatory) guide values.

6 Main findings and key messages Hazardous substances There have been significant reductions in the discharges/releases to water and of emissions to air of hazardous substances such as heavy metals, dioxins and polyaromatic hydrocarbons from most North Sea countries and to the North East Atlantic since the mid 1980s. The loads of many hazardous substances to the Baltic Sea have been reduced by at least 50 % since the late 1980s.  There is very limited information on the loads entering the Mediterranean and Black Seas, and none on how these have changed over recent years. Pollution of rivers by heavy metals and a few other heavily regulated chemicals is decreasing.  For the many other substances that are present in Europe’s water no assessment of change can be made, due to a lack of data.  Pesticide and metal contamination of drinking water supplies has been identified as a problem in many European countries. There is some evidence that the reduction in loads to water of some hazardous substances is leading to decreases in the concentrations of these substances in marine organisms in some of Europe’s seas.  Contaminant concentrations above limits for human consumption are still found in mussels and fish, mainly from estuaries of major rivers, near industrial point discharges and in harbours.

7 Main findings and key messages Water quantity  Eighteen percent of Europe’s population live in countries that are water stressed. Over the last decade there were decreases in water abstracted for agriculture, industry and urban use in central accession and western central countries, and in water used for energy production in western southern and western central countries.  There was an increase in agricultural water use in south-western countries.  Large areas of the Mediterranean coastline in Italy, Spain and Turkey are reported to be affected by saltwater intrusion. The main cause is groundwater over- abstraction for public water supply and in some areas abstractions for tourism and irrigation. Measures to control demand for water, such as water pricing, and technologies that improve water use efficiency are contributing to reductions in water demand.  Agriculture pays much lower prices for water than the other main sectors, particularly in southern Europe.  In some countries, losses of water by leakage from water distribution systems can still be significant, exceeding 40 % of supply.

8 Main findings and key messages Information Over the past eight years implementation of Eurowaternet has led to marked improvements in information about Europe’s water.  Eurowaternet is based on existing country monitoring and will in the future be adapted to meet the reporting needs of the water framework directive.  The EEA is developing a core set of water indicators to help streamlining of European water reporting and to make it more policy relevant.

9 A) Biological quality elements in river and lake classification systems and compatibility with the water framework directive, and B) the biological quality elements monitored and categorised in transitional and coastal waters in EU (and Norway

10 Rate of change in rivers category between less than good and good

11 Wastewater treatment in Europe between 1980s and late 1990s

12 Nutrient discharges and wastewater treatment in selected western European countries

13 Phosphate (A) and nitrate (B) in European rivers

14 Average summer concentration of phosphorus in lakes

15 Reduction of loads of nitrogen and phosphorus into the North and Baltic Seas since 1985, and B) Sectoral contribution to nitrogen and phosphorus loads in the North and Baltic Seas.

16 Average nitrate concentration in European groundwater bodies

17 Reductions in discharges and emissions of some hazardous substances to water and air from North Sea countries between 1985 and 1999

18 Concentration of cadmium and mercury at river stations

19 Summary of trends in concentrations in biota in Baltic Sea, the North East Atlantic Ocean, and Mediterranean sea

20 Water exploitation index (WEI) across Europe

21 Sectoral use of water

22 Agricultural use of water in three regions of Europe