21E+WAn approving body may voluntarily adopt all or part of a sustainable drainage system, as defined by regulations made by the Minister, to which the duty to adopt does not apply.
Commencement Information
I1Sch. 3 para. 21 in force at 2.5.2018 for specified purposes for W. by S.I. 2018/557, art. 2(b)
I2Sch. 3 para. 21 in force at 7.1.2019 for W. in so far as not already in force by S.I. 2018/557, art. 3(b)