anx_I__table_1__text_1

Artificial pH variations with respect to the unaffected values shall not exceed ±0,5 of a pH unit within the limits falling between 6,0 and 9,0 provided that these variations do not increase the harmfulness of other substances present in the water. Phenolic compounds must not be present in such concentrations that they adversely affect fish flavour. Petroleum products must not be present in water in such quantities that they: form a visible film on the surface of the water or form coatings on the beds of water-courses and lakes, impart a detectable ‘hydrocarbon’ taste to fish, produce harmful effects in fish. In particular geographical or climatic conditions and particularly in cases of low water temperature and of reduced nitrification or where the competent authority can prove that there are no harmful consequences for the balanced development of the fish population, Member States may fix values higher than 1 mg/l.

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Source: EUR-Lex (Cellar) · retrieved 2026-10-13 · Text as adopted (Official Journal); later amendments are not incorporated in this text.