Water fluoridation
Health and dental organizations worldwide have endorsed its safety and effectiveness. Its use began in 1945, following studies of children in a region where higher levels of fluoride occur naturally in the water. Further research showed that moderate fluoridation prevents tooth decay.
Water fluoridation in Australia
On 29 November 2012 the Queensland Parliament, with a Liberal National Party government, reversed the previous Labor government's mandate requiring certain public potable water supplies to add fluoride to the water. As a consequence of these changes local councils in Queensland have the choice to add fluoride to drinking water supplies, similar to the conditions in place under the previous legislation. In January 2013 the Cairns council decided to discontinue water fluoridation.