The Groundwater Regulations 1998

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

(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 (including substances which have those properties which would otherwise be in list II);

(e)mercury and its compounds;

(f)cadmium and its compounds;

(g)mineral oils and hydrocarbons;

(h)cyanides.

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