The fluoride status of Katherine's public water supply, who decides, and how to check it yourself. Page last updated 6 November 2026.
One of seven dosed NT locations.
Fluoridating Darwin and Katherine costs about $1 million a year.
Health authorities, including the NHMRC, recommend drinking fluoridated tap water to reduce tooth decay. Some residents prefer to reduce their intake, and that's a personal choice.
Law: No Act. 2010 Health policy.
Who decides: Power and Water, by policy (towns over 600 people).
Coverage: about 70% added, plus ~9% natural (2012). First fluoridated: Darwin, 1972.
Yes. Fluoride is added to Katherine's water. One of seven dosed NT locations.
Power and Water, by policy (towns over 600 people).
Look up Power and Water's annual drinking water quality report, which lists fluoride in mg/L by supply zone. You can also ask the utility for monthly readings.
No. Boiling leaves the fluoride behind and slightly concentrates it. Reverse osmosis, distillation and activated alumina filters remove fluoride. Read more.