More than 300 people have spoken out against Napier's water being fluoridated in a petition circulating the city.
In less than a week, Napier resident Matthew Kingi has gathered around 310 signatures on his petition, which he plans to present to Parliament - and maybe Napier City Council, and the Hawke's Bay District Health Board.
He will be doing this ahead of the second reading of a controversial bill which seeks to amend the Health Act 1956.
The bill gives District Health Boards (DHBs) the power to make decisions, and give directions about the fluoridation of drinking water supplies. Currently the decision to fluoridate rests with local authorities.
Mr Kingi said he had been against fluoride for several years as "I believe it has negative effects on our health, and our mental capacity".