Recital 36

(36) In order to ensure a level playing field in the Union and allow comparability of water body status between Member States, there is a need to harmonise national threshold values for some man-made synthetic groundwater pollutants. Threshold values should be established as necessary at Union level for pollutants which have an anthropogenic origin or for the products of their degradation or decomposition, provided that those pollutants and degradation products either do not occur naturally in groundwater, or, if identical natural counterparts exist, provided that their natural background levels are, at most, low. Those threshold values should be included in the repository of harmonised threshold values for man-made synthetic substances in groundwater of national, regional or local concern in a new Part D of Annex II to Directive 2006/118/EC. A harmonised threshold value for individual pharmaceuticals should be included for application by Member States to any pharmaceutical active substance identified as posing a risk at national level unless a stricter standard or threshold value has been set specifically for that substance at Union or national level.

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Source: EUR-Lex (Cellar) · retrieved 2026-10-08 · Text as adopted (Official Journal); later amendments are not incorporated in this text.