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According to the 2^nd RBMP of the WFD, 33 % of all surface water bodies in Europe are affected by diffuse source pollution, and nearly the same amount of groundwater area (34 %). Point source pollution affects 15 % of all surface water bodies, and 14 % of the groundwater area ([1]). 

([1]) Source: https://www.eea.europa.eu/themes/water/european-waters/water-quality-and-water-assessment/water-assessments/pressures-and-impacts-of-water-bodies; download 17.06.2020