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Trend in median total ammonium, total phosphorus and nitrate concentration of river water bodies, grouped by ecological status/potential class
Concentrations are expressed as a median of annual mean concentrations. Up to three-year gaps of missing values have been interpolated or extrapolated. Only complete series with no missing values after this interpolation/extrapolation are included. The number of time series/river stations is shown in parentheses. The trend for 1992 to 2010 for each of the ecological quality classes has been linearly extended to 2027 — or when the concentration level becomes negative.
Biochemical Oxygen Demand (BOD5) and total ammonium concentrations in rivers between 1992 and 2007
Numbers of river monitoring stations in brackets
Water quality of rivers in six Member States 1980-1999. BOD, phosphorous and ammonium
Biochemical Oxygen Demand (BOD5) and total ammonium concentrations in rivers between 1992 and 2010
Concentrations are expressed as annual mean concentrations. Only complete series after inter/extrapolation are included (see indicator specification). The number of river monitoring stations included per country is given in metadata (see downloads and more info). BOD7 data has been recalculated into BOD5 data.
Total ammonium concentrations in rivers between 1992 and 2010 draining to 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 included per sea region is given in parentheses.
Total ammonium concentrations in rivers between 1992 and 2010 in different geographical regions of Europe
The data series per region are calculated as the average of the annual mean for river monitoring stations in the region. Only complete series after inter/extrapolation are included (see indicator specification). The number of river monitoring stations included per geographical region is given in parentheses.
Trends in winter mean dissolved inorganic nitrogen concentrations in European seas
The map shows trends per station in dissolved inorganic nitrogen (DIN) concentrations in the upper 10 m of the water column, observed in European Seas during winter time during the period 1990-2017.
Annual average concentrations of ammonium N measurements at Bimmen / Lobith (Rhine)
Average pollution concentrations for European rivers
Biochemical oxygen demand and ammonium in European Rivers
This figure shows the trends in biochemical oxygen demand (BOD) and ammonium in European rivers.
Concentrations of total ammonium, biochemical oxygen demand, nitrate and orthophosphate in European rivers between 1992 and 2002
Concentrations are average of the annual average concentrations per year