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A) Biochemical Oxygen Demand (BOD5), total ammonium orthophosphate concentrations in rivers and total phosphorus concentration in lakes between 1992 and 2009

B) Change in winter orthophosphate concentrations in coastal and open waters of the North East Atlantic, Baltic, Mediterranean and North Seas

Source: CSI19

Source: CSI21

C) Percentage bathing waters complying with mandatory  quality requirements, EU results based on more than 21 000 beaches

D) Emission of heavy metals from waste water treatment plants - Netherlands

Source: CSI22

Source:

http://www.compendiumvoordeleefomgeving.nl/indicatoren/nl0549-Emissies-naar-oppervlaktewater-en-riool.html?i=26-165