I will make it about as simple as I can. I will read from the legislation, Senator McKenzie. Note 1 in schedule 1 says:

As a result of subsection (4) of this section, water access rights may be purchased only if the purchase is related to an adjustment of a long-term average sustainable diversion limit under section 23A. That section requires the Basin Plan to prescribe criteria in relation to such adjustments. The effect of the criteria prescribed by the Basin Plan is that water access rights may be purchased only in conjunction with improving irrigation water use efficiency on farms or an alternative arrangement proposed by a Basin State.

Note 2 says:

Under this Part, the Commonwealth will not conduct open tender rounds that are available to all water access entitlement holders in a water resource plan area to purchase water access rights.