The fluoride status of Denham's public water supply, who decides, and how to check it yourself. Page last updated 6 November 2026.
Groundwater treated by reverse osmosis, below 0.1 mg/L in 2024-25.
Without fluoridated water, dental guidelines put more weight on fluoride toothpaste, diet and regular check-ups. Some people prefer fluoride-free options.
Law: Fluoridation of Public Water Supplies Act 1966
Who decides: Health Minister, on advice of an advisory committee.
Coverage: about 94% of residents (2025). First fluoridated: Perth, 1968.
No. Fluoride is not added to Denham's water. Groundwater treated by reverse osmosis, below 0.1 mg/L in 2024-25.
Health Minister, on advice of an advisory committee.
Look up Water Corporation'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.