(1) The trust may, in
respect of a financial year or part of a financial year by notice published in
a local newspaper, declare a drainage charge based on the area of land
irrigated or drained or on the basis of the volume of water supplied or
delivered for irrigating the land.
(2) The trust may
exempt an owner and occupier of land from payment of drainage charges if water
does not drain from the land into the drainage system provided by the trust or
if the quantity of water that drains into the system is negligible.
(3) A drainage charge
may be declared after the period to which it relates has commenced.
(4) This section does
not limit the operation of section 42.