Some farmers may have to pay $50,000 a year royalty for water?? I don't believe that bill.Scaremongering.
At 2c a cubic litre That would be 2.5 BILLION LITRES as much as 30,000 people use yearly(80 cubic m each)
Some farmers are incredibly inefficient and wasteful; they have to go or adapt and stop wasting our resource and contributing more pollution(nitrification with too much runoff)
A 1 or 2c royalty would achieve that almost overnight, win/win/win.