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The Surface Waters (Abstraction for Drinking Water) (Classification) Regulations (Northern Ireland) 1996

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Compliance with standards

6.—(1) Subject to paragraphs (2) and (3), any waters classified under these Regulations shall be treated as complying with any standard in relation to any parameter adopted by the Department as a result of regulation 5 in relation to those waters if—

(a)90 per cent of the samples taken in relation to the waters in accordance with regulation 5 comply with the standard;

(b)none of the samples fails the standard by more than 50 per cent;

(c)there is no associated danger to public health where any of the samples fails to comply with the standard; and

(d)there have been no occasions on which consecutive samples so taken at statistically suitable intervals fail to comply with the standard.

(2) Non-compliant samples shall be ignored for the purposes of paragraph (1) if they are the result of a flood, natural disaster or abnormal weather conditions.

(3) Paragraph 1(b) shall not apply in the case of any standard adopted by the Department in relation to temperature, pH, dissolved oxygen and microbiological parameters

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