60% of New Zealanders has access to fluoridated water
In 2016–17, 60 percent of the population on registered drinking-water supplies had access to fluoridated drinking-water. This amounts to about 2.3 million people .
Figure 1: Percentage of population* with access to fluoridated drinking-water by territorial authority, 2016-2017 (*among the population on registered drinking-water supplies serving more than 100 people)
Access to fluoridated water is mainly in cities
Most people who have access to fluoridated drinking-water live in cities. This is because people in cities are more likely to have a reticulated water supply. Water fluoridation is also only cost-effective with a minimum population size of around 1000 people .
Over half of those who receive fluoridated drinking-water live in the greater Auckland region.
Of the other major cities in New Zealand, Wellington, Hamilton and Dunedin have the greatest percentage population with access to fluoridated drinking-water. The drinking-water supply of Christchurch city is not fluoridated.
See a map of fluoridated water supplies on the Drinking Water for New Zealand website
- Ministry of Health. 2018. Annual Report on Drinking-water Quality 2016–2017. Wellington: Ministry of Health.
- Wright J, Bates M, Cutress T, Lee M. 2001. The cost-effectiveness of fluoridating water supplies in New Zealand. Australian and New Zealand Journal of Public Health 25(2):170-8.