Concentrations are expressed as the average of annual mean concentrations. Up to 3-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 river monitoring stations included in the analysis per geographic region is noted in brackets. BOD7 data (Estonia, Finland, Lithuania (1996-2008), Latvia (1996-2001)) has been recalculated into BOD5 data.
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Eastern Europe (363): CZ (70), HU (98), EE (53), LT (28), LV (39), SI (22), SK (53); Northern Europe (23): FI (23); Southern Europe (227): ES (227); Southeastern Europe (103): AL (9), BG (85), MK (9); Western Europe (550): AT (145), BE (26), DK (35), FR (306), GB (29), IE (6), LU (3).
Anything you pour down your drain, sink or toilet can eventually end up in our rivers or sea! Never dispose of liquids such as oils, grease, or hazardous liquids – like paint thinners or unused paint – by pouring them down the drain. Instead, collect them in one box and dispose with the rest of your waste. Keep them all in their individual packaging, to avoid possible chemical reactions. This will also make it easier for them to be identified during waste collection. If applicable, take them to your community collection point.
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