A council must not, except in accordance with the approval of the Minister for Water, Property and Housing, do any of the following--
(b) as to water treatment works--construct or extend any such works,
(c) as to sewage--provide for sewage from its area to be discharged, treated or supplied to any person,
Note : Approval is required under Part 3 of Chapter 3 of the Water Management Act 2000 for the construction or use by a council of water supply works or flood works within the meaning of that Act.