(d)

the relationship between the threshold values and: in the case of naturally-occurring substances, the observed background levels, the environmental quality objectives and other standards for water protection that exist at national, Community or international level, and any relevant information concerning the toxicology, eco-toxicology, persistence, bioaccumulation potential, and dispersion tendency of the pollutants.

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Source: EUR-Lex (Cellar) · retrieved 2026-10-28 · Text as adopted (Official Journal); later amendments are not incorporated in this text.