Labour Party water spokesman David Parker disputes a claim Labour's water policy could cost Central Otago farmers $6million a year.
Mr Parker said he did not accept Central Otago's economy could lose the amount quoted by Central Otago Mayor Tim Cadogan in a letter to Labour leader Jacinda Ardern last week.
The policy was for a water royalty, not a tax, and was intended to gather a contribution from those who made a private profit from a public resource. That money would then be put back into water quality projects in the regions from which it was gathered, so Otago royalties would be spent in Otago.
Mr Parker said the charge of 2c per 1000 litres of water would not make a large difference to farming operations, even those that were marginal, and there had been a "lot of scaremongering'' about the policy and ``some wildly exaggerated claims about likely royalty levels''.
He said at 2c per 1000 litres, the effect on turnover for a dairy operation would be less than 1% and for a viticulture operation even less than that. For dairy farmers it would amount to 6c per kg of milk solids (Fonterra's predicted payout for 2017-18 is $6.50 per kg of milk solids) and for wineries it would amount to about 2c per litre of wine.