Regulation 6 Compliance with guideline values

(1)

Subject to paragraphs (2) and (3) below, any waters classified under these Regulations shall be treated as complying with the limit specified in Schedule 2 for waters of the relevant class in relation to a parameter if–

(a)

90 per cent of the samples taken in relation to the waters in accordance with regulation 9 below comply with the standard;

(b)

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

(c)

there is no danger to public health; and

(d)

consecutive samples taken at statistically suitable intervals do not exceed the standard.

(2)

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

(3)

Paragraph (1)(b) above shall not apply in the case of the limits specified in Schedule 2 in relation to temperature, pH, dissolved oxygen and microbiological parameters.