3.—(1) At the end of every bathing season, the appropriate agency must classify a bathing water as “poor” if, in the set of bathing water quality data used, the percentile values for microbiological concentrations are higher than the “sufficient” standards set out in paragraph 1.
(2) At the end of every bathing season, the appropriate agency must classify a bathing water as “sufficient” if—
(a)in the set of bathing water quality data, the percentile values for microbiological concentrations are equal to or lower than the “sufficient” standards set out in paragraph 1; and
(b)the bathing water is not classifiable as “good” or “excellent”.
(3) At the end of every bathing season, the appropriate agency must classify a bathing water as “good” if—
(a)in the set of bathing water quality data, the percentile values for microbiological concentrations are equal to or lower than the “good” standards set out in paragraph 1; and
(b)the bathing water is not classifiable as “excellent”.
(4) At the end of every bathing season, the appropriate agency must classify a bathing water as “excellent” if, in the set of bathing water quality data used, the percentile values for microbiological concentrations are equal to or lower than the “excellent” standards set out in paragraph 1.