5.—(1) Article 160 (adoption: supplementary) is amended as follows.
(2) In paragraph (1), omit the “or” at the end of sub-paragraph (b) and after that sub-paragraph insert—
“(ba)any sustainable drainage system which is situated within the area of another sewerage undertaker or which, though situated in its own area, serves the whole or any part of the area of another sewerage undertaker; or”.
(3) In paragraph (3)—
(a)in sub-paragraph (a), for “or a lateral drain” substitute “, a lateral drain or a sustainable drainage system”;
(b)in sub-paragraph (b), after “lateral drain”, in the first place those words occur, insert “, sustainable drainage system”;
(c)in sub-paragraph (b), for “or lateral drain” substitute “, lateral drain or system”;
(d)in the words following sub-paragraph (b), after “or the lateral drain” insert “or the system”.
(4) In paragraph (4)(a), for “or lateral drain” substitute “, lateral drain or sustainable drainage system”.