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1. The Principal Regulations are amended as follows.
2. In Schedule 1 (prescribed concentrations and values), in Table B (chemical parameters), in Part II (national requirements)—
(a)omit the line containing item 3 (hydrogen ion);
(b)omit the following line beginning “6.5 (minimum)”;
(c)in the lines containing items 6 (odour) and 8 (taste)—
(i)for “3 at 25°C” substitute “Acceptable to consumers and no abnormal change”, and
(ii)omit “Dilution number”.
3. In Schedule 2 (indicator parameters)—
(a)in the heading to the third column, after “maximum” insert “unless otherwise stated”; and
(b)under the line containing item 7 (hydrogen ion), in a new line insert—
(i)in the third column “6.5 (minimum)”, and
(ii)in the corresponding fourth column “pH value”.
4. In Schedule 3 (monitoring)—
(a)in Table 2 (annual sampling frequencies: water supply zones), under the heading “parameters subject to audit monitoring”, in its appropriate place in the first column insert “Clostridium perfringens (including spores)”; and
(b)in Table 3 (annual sampling frequencies: treatment works or supply points) under the heading “subject to audit monitoring”, insert—
(i)in the first column, in its appropriate place “11A”, and
(ii)in the corresponding second column “Clostridium perfringens (including spores)”.
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