A broad literature review (55 studies published between 2000 and 2019) now shows that 639 chemicals are already known as contaminants in river bank filtrate (114 substances), groundwater (338 substances), raw water (212 substances) or drinking water (385 substances). The literature review carried out by the German Environment Agency reveals: Every second substance that contaminates our drinking water resources is registered under ⁠REACH⁠, of which 24 % fall in the new ⁠CLP⁠ hazard classes PMT and vPvM. Considering only the raw water, the proportion even rises to 32 %. In the REACH registration database, the proportion of PMT/vPvM substances based on CLP criteria is only 1.9 %.