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Indicator Assessment Nutrients in freshwater
Since 2005, average nitrate concentrations in European groundwater have declined and in 2011, the mean concentration had almost returned to the 1992 level. The average nitrate concentration in European rivers declined by 0.03 milligrams per liter of nitrogen (mg N/l) (0.8%) per year over the period 1992 to 2012. The decline in nitrate concentration reflects the effect of measures to reduce agricultural inputs of nitrate, as well as improvements in wastewater treatment. Average orthophosphate concentration in European rivers has decreased markedly over the last two decades (0.003 milligrams per liter of phosphorous (mg P/l) or 2.1% per year). Also, average lake phosphorus concentration decreased over the period 1992-2012 (0.0004 mg P/l, or 0.8% per year). The decrease in phosphorus concentration reflects both improvements in wastewater treatment and the reduction of phosphorus in detergents.
Located in Data and maps Indicators Nutrients in freshwater
Indicator Assessment Oxygen consuming substances in rivers
Concentrations of biochemical oxygen demand (BOD) and total ammonium have decreased in European rivers in the period 1992 to 2012 (Fig. 1), mainly due to general improvement in waste water treatment.
Located in Data and maps Indicators Oxygen consuming substances in rivers
Figure Percentage of assessed freshwater animal species in each conservation class in the EU-25 per biogeographic region
The number of assessed species present in each region is given in brackets.
Located in Data and maps Maps and graphs
Figure Percentage of inland bathing waters in the European Union per compliance category
Trend in percentage of inland bathing waters in the European Union per compliance category
Located in Data and maps Maps and graphs
Figure Phosphorus concentrations in rivers (orthophosphate) between 1992 and 2009 in different sea regions of Europe
The sea region data series are calculated as the average of annual mean data from river monitoring stations in each sea region. The data thus represents rivers or river basins draining into that particular sea. Only complete series after inter/extrapolation are included (see indicator specification). The number of river monitoring stations per region is given in parentheses.
Located in Data and maps Maps and graphs
Data Visualization Phosphorus concentrations in rivers (orthophosphate) between 1992 and 2011 in different sea regions of Europe
Located in Data and maps Data visualisations
Figure Phosphorus concentrations in rivers (orthophosphate) between 1992 and 2011 in different sea regions of Europe
The sea region data series are calculated as the average of annual mean concentrations for river monitoring stations in each sea region. The data thus represents rivers or river basins draining into that particular sea. Only complete series after inter/extrapolation are included (see indicator specification). The number of river monitoring stations per sea region is given in parentheses.
Located in Data and maps Maps and graphs
Figure Phosphorus concentrations in rivers (orthophosphate) between 1992 and 2010 in different sea regions of Europe
The sea region data series are calculated as the average of annual mean data from river monitoring stations in each sea region. The data thus represents rivers or river basins draining into that particular sea. Only complete series after inter/extrapolation are included (see indicator specification). The number of river monitoring stations per sea region is given in parentheses.
Located in Data and maps Maps and graphs
Data Visualization Phosphorus concentrations in rivers (orthophosphate) in different sea regions of Europe
Located in Data and maps Data visualisations
Figure Phosphorus concentrations in rivers (orthophosphate) between 1992 and 2008 in different sea regions of Europe
The sea region data series are calculated as the average of annual mean data from river monitoring stations in each sea region. The data thus represents rivers or river basins draining into that particular sea. Only complete series after inter/extrapolation are included (see indicator specification). The number of river monitoring stations per region is given in parentheses.
Located in Data and maps Maps and graphs
European Environment Agency (EEA)
Kongens Nytorv 6
1050 Copenhagen K
Denmark
Phone: +45 3336 7100