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The Groundwater Regulations (Northern Ireland) 1998

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1.—(1) Subject to sub-paragraph (2), a substance is in list I if it belongs to one of the following families or groups of substances–

(a)organohalogen compounds and substances which may form such compounds in the aquatic environment;

(b)organophosphorus compounds;

(c)organotin compounds;

(d)substances which possess carcinogenic, mutagenic or teratogenic properties in or via the aquatic environment(1);

(e)mercury and its compounds;

(f)cadmium and is compounds;

(g)mineral oils and hydrocarbons;


(2) A substance is not in list I if it has been determined by the Department to be inappropriate to list I on the basis of a low risk of toxicity, persistence and bioaccumulation.


Where, any substance which would otherwise be in list II is carcinogenic, mutagenic or teratogenic, it is included in this category in list I

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