In order to ensure effective protection of the aquatic environment of the Community, it is necessary to establish a first list, called List I, of certain individual substances selected mainly on the basis of their toxicity, persistence and bioaccumulation, with the exception of those which are biologically harmless or which are rapidly converted into substances which are biologically harmless, and a second list, called List II, containing substances which have a deleterious effect on the aquatic environment, which can, however, be confined to a given area and which depends on the characteristics and location of the water into which such substances are discharged.
Proporcjonalność środków przyjętych przez Zjednoczone Królestwo dodatkowo wzmacnia fakt, że dla szeregu wymienionych wydarzeń wymagana jest jedynie przepisowa wtórna transmisjaEurLex-2 EurLex-2