For section 51(1AA) of the Water Act 1989 substitute —
"(1AA) An application may not be made under subsection (1) to take and use water in a declared water system unless—
(a) the water to be taken and used is to be subject to a condition that a proportion of the water so taken and used is to be returned to the water system; or
(b) the water is to be taken and used for a prescribed purpose.".