# The Groundwater (England and Wales) Regulations 2009, Regulation 3: Meaning of “hazardous substance”


(1) A hazardous substance is any substance or group of substances that are toxic, persistent and liable to bio-accumulate.
(2) This includes in particular the following when they are toxic, persistent and liable to bio-accumulate—
(a) organohalogen compounds and substances which may form such compounds in the aquatic environment;
(b) organophosphorous compounds;
(c) organotin compounds;
(d) substances and preparations, or the breakdown products of such, which have been proved to possess carcinogenic or mutagenic properties or properties which may affect steroidogenic, thyroid, reproduction or other endocrine-related functions in or via the aquatic environment;
(e) persistent hydrocarbons and persistent and bioaccumulable organic toxic substances;
(f) cyanides;
(g) metals (in particular cadmium and mercury) and their compounds;
(h) arsenic and its compounds;
(i) biocides and plant protection products.
(3) The Agency must publish a list of substances that it considers to be hazardous substances.

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Source: https://www.legislation.gov.uk/ukdsi/2009/9780111480816/regulation/3 (the official version)
Page: https://openlegislation.uk/draft-groundwater-england-and-wales-regulations-2009/regulation-3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.