Concentrations of nitrate (left, NO3) and phosphorus (right, OP (orthophosphate) or TP (total phosphorus)) in European freshwater bodies in the period 1992-2005.

Only stations with time series consisting of minimum seven years are included. The number of stations included per country is given in parenthesis.

Nitrate in groundwater: AT (14), BE (25), BG (63), DE (9), DK (3), EE (5), ES (1), FI (38), GB (29), HU (18), IE (3), LI (1), LT (7), LV (2), NL (9), NO (1), PL (3), PT (3), SE (3), SI (5), SK (10).

Nitrate in rivers//total oxidized nitrogen*: AT (145), BE (23), BG (82), CZ (70), DE (125), DK* (39), EE (53), FI* (131), FR (287), GB* (139), HU (98), LT (64), LU (3), LV (47), NL* (9), NO (10), PL (104), SE* (113), SI (24), SK (52).

Nitrate/total oxidized nitrogen* in lakes: DE (6), EE (5), FI (21), GB (21), HU (16), LT (8), LV (8), NL* (7) NO (92), SE* (181), SL (4).

Orthophosphate in rivers: AT (134), BE (26), BG (64), CZ (65), DE (133), DK (40), EE (53), FI (116), FR (241), GB (69), HU (98), LT (64), LV (47), NO (10), PL (100), SE (113), SI (23), SK (6).

Total phosphorus in lakes: AT (5), DE (7), DK (23), EE (5), FI (207), GB (18), HU (10), IE (7), LT (7), LV (8), NL (7), SE (165).

*) Some countries measure nitrate plus nitrite (NO₃+ NO₂) = total Oxidized nitrogen - as nitrite (NO₂) is usually a few percent of total Oxidized nitrogen, we have countries where nitrate is measured using a total of Oxidized Nitrogen