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BOD5 concentrations in rivers between 1992 and 2009 draining to different sea regions of Europe: Geographical coverage: Baltic Sea, Black Sea, Celtic Seas, Bay of Biscay, Iberian Cost, Greater North Sea, Mediterranean Sea.
Located in Data and maps › Maps and graphs
Freshwater quality (SEBI 016) - Assessment published May 2010: Pollution of rivers with organic matter and ammonium is decreasing as are the levels of other anthropogenic nutrients in freshwater generally (rivers, lakes and groundwater). This reduces stress on freshwater biodiversity and improves ecological status.
Located in Data and maps › Indicators › Freshwater quality
Oxygen consuming substances in rivers (CSI 019) - Assessment published Nov 2005: Concentrations of organic matter and ammonium generally fell at 50% of stations on European rivers during the 1990s, reflecting improvements in wastewater treatment. However, there were increasing trends at 10% of the stations over the same period. Northern European rivers have the lowest concentrations of oxygen-consuming substances measured as biochemical oxygen demand (BOD) but concentrations are higher in rivers in some of the new EU Member States and Accession countries where wastewater treatment is not so advanced. Ammonium concentrations in many rivers in EU Member States and Accession countries are still far above background levels.
Located in Data and maps › Indicators › Oxygen consuming substances in rivers
Oxygen consuming substances in rivers (CSI 019) - Assessment published Jan 2009: Concentrations of BOD and total ammonium have decreased in European rivers in the period 1992 to 2006, corresponding to the general improvement in wastewater treatment (Fig. 1). EEA water quality indicators have up to now presented European and regional overviews and country comparison. However, water quality data at national level may not be relevant or sufficient for some countries, and EEA will in the coming years change its indicators to reflect concentration levels and trends at River Basin District (RBD) level to duly reflect local and regional differences in water quality. See also WISE interactive maps: Mean annual BOD in rivers and Mean annual Total Ammonium in rivers
Located in Data and maps › Indicators › Oxygen consuming substances in rivers
Oxygen consuming substances in rivers (CSI 019) - Assessment published Dec 2010: Concentrations of BOD and total ammonium have decreased in European rivers in the period 1992 to 2009 (Fig. 1), mainly due to general improvement in wastewater treatment. See also WISE interactive maps: Mean annual BOD in rivers and Mean annual Total Ammonium in rivers
Located in Data and maps › Indicators › Oxygen consuming substances in rivers
Oxygen consuming substances in rivers (CSI 019) - Assessment DRAFT created Apr 2012: Concentrations of BOD and total ammonium have decreased in European rivers in the period 1992 to 2009 (Fig. 1), mainly due to general improvement in wastewater treatment. See also WISE interactive maps: Mean annual BOD in rivers and Mean annual Total Ammonium in rivers
Located in Data and maps › Indicators › Oxygen consuming substances in rivers
BOD and total ammonium concentrations in rivers between 1992 and 2002: Number of river monitoring stations included in analysis noted in brackets
Located in Data and maps › Maps and graphs
BOD and total ammonium concentrations in rivers between 1992 and 2003: Number of river monitoring stations included in analysis noted in brackets
Located in Data and maps › Maps and graphs
BOD5 and total ammonium concentrations in rivers between 1992 and 2005: Number of river monitoring stations included in analysis noted in brackets
Located in Data and maps › Maps and graphs
Biochemical Oxygen Demand (BOD5) and total ammonium concentrations in rivers between 1992 and 2006: Between 1992 and 2006, BOD5 decreased from 5 to 2 mg O2/l
Located in Data and maps › Maps and graphs