9.—(1) Article 168 (restrictions on use of public sewers) is amended as follows.
(2) In paragraph (1)—
(a)after “a public sewer” insert “or into a sustainable drainage system”;
(b)in sub-paragraph (a), after “sewer, drain” (in both places) insert “, system”.
(3) In paragraph (2), after “sewer, drain” insert “, system”.