There is overwhelming support for a water tax in New Zealand even if it means higher costs for consumers, a new poll shows.
The Herald-ZB Kantar TNS online survey shows that 70 per cent of people agree that commercial water users should pay a royalty to help fund the clean-up of waterways.
Just 19 per cent of the 1000 respondents oppose the idea, while the remainder are unsure.
The Labour Party has promised a royalty on water if it is in government, saying users in rural areas would pay around 2c per 1000 litres and the money would be given to councils and iwi to restore waterways.
The Green Party, the Maori Party and The Opportunities Party also want a price on water.
New Zealand First supports a charge for commercial water bottlers, but not primary producers.