Regulation 3 Compliance with relevant requirements
Subject to paragraphs (2) and (3) below, any waters classified under these Regulations shall be treated in relation to any period of twelve months as complying with the requirements specified in the Schedule to these Regulations for any parameter if in that period in relation to those waters—
in the case of the parameter for organohalogenated substances or metals, 100 per cent of the samples taken for that parameter in accordance with regulation 4 below comply with the requirements;
in the case of the parameter for salinity or dissolved oxygen, 95 per cent of the samples taken for that parameter in accordance with regulation 4 below comply with the requirements;
in the case of any other parameter, 75 per cent of the samples taken for that parameter in accordance with regulation 4 below comply with the requirements.
Where in accordance with regulation 4(5) below the frequency of sampling is reduced for any parameter in relation to any waters classified under these Regulations, 100 per cent of samples taken for that parameter in accordance with regulation 4 below in relation to those waters must comply with the requirements for that parameter specified in the Schedule to these Regulations.
Non-compliant samples shall be ignored for the purposes of paragraphs (1) and (2) above if they are the result of a disaster.