Albania Austria Bosnia and Herzegovina Belgium Bulgaria Switzerland Cyprus Czech Republic Germany Denmark Estonia Spain Finland France United Kingdom Greece Croatia Hungary Ireland Iceland Italy Liechtenstein Lithuania Luxembourg Latvia Montenegro Macedonia, the Former Yugoslav Republic of Malta Netherlands Norway Poland Portugal Romania Serbia Sweden Slovenia Slovakia Turkey Phreatic groundwater (shallow): 0-5 m (inclusive springs 0 m) Phreatic groundwater (deep): 5-15 m Phreatic groundwater (deep): 15-30 m Phreatic groundwater (deep): >30 m Captive groundwater Karstic groundwater River water Lake water Transitional water Coastal water Marine water Secchi Depth Transparency Secchi depth (in meters) Total Nitrogen N Nitrite NO2 Nitrate NO3 Biochemical Oxygen Demand, Dissolved Oxygen BOD, DO Total Phosphorus P Orthophosphate PO4 Chlorophyll-a, Dissolved inorganic Nitrogen, Dissolved inorganic Phosphorus Chl-a, DIN, DIP