Article 3U.K.
Member States shall take the appropriate steps to eliminate pollution of the waters referred to in Article 1 by the dangerous substances in the families and groups of substances in List I of Annex I, hereinafter referred to as ‘List I substances’, and to reduce pollution of the said waters by the dangerous substances in the families and groups of substances in List II of Annex I, hereinafter referred to as ‘List II substances’, in accordance with this Directive.