4—(1) Article 159 (adoption) is amended as follows.N.I.
(2) In the heading, after “sewers” insert “ , sustainable drainage systems ”.
(3) In paragraph (2)—
(a)after “lateral drain”, in the first place those words occur, insert “ , sustainable drainage system ”, and
(b)after “lateral drain”, in the second place those words occur, insert “ , system ”.
(4) In paragraph (4)(a), after “lateral drain” insert “ , system ”.
(5) In paragraph (5)—
(a)in sub-paragraph (a), after “sewer” insert “ , system ”;
(b)in sub-paragraph (b), for “or lateral drain” substitute “ , lateral drain or system ”;
(c)in sub-paragraph (c), for “or lateral drain” substitute “ , lateral drain or system ”;
(d)in sub-paragraph (d), after “lateral drain” insert “ , system ”.
(6) In paragraph (6), for “or lateral drain” (in both places) substitute “ , lateral drain or system ”.