After section 22G(2) of the Principal Act insert —
"(3) If the Minister endorses a Sustainable Water Strategy for a region under subsection (1)(a) or (b), the Minister may revoke or amend an existing Sustainable Water Strategy for all or part of the same region.
(4) If the Minister revokes or amends an existing Sustainable Water Strategy under subsection (3), the Minister must include a notice of the revocation or amendment in the Strategy that the Minister endorses.".