Natural fluoride from the Bald Hill bores, averaging 0.96 mg/L in 2025-26.
Without fluoridated water, dental guidelines put more weight on fluoride toothpaste, diet and regular check-ups. Your supply does carry some natural fluoride. Some people prefer fluoride-free options.
Law: Health (Fluoridation) Act 1973
Who decides: State government directs water corporations.
Coverage: about 90% of residents (2024). First fluoridated: Bacchus Marsh, 1962.
Wannon Water's $52.2m program will add reverse osmosis, which removes the natural fluoride, then dose fluoride back. Due by 2029.
0.96 mg/L average (2025-26), according to Wannon Water report 2025-26. Fluoridated supplies in Australia target 0.6 to 1.1 mg/L, and the health guideline maximum is 1.5 mg/L.
Fluoride isn't added, but it occurs naturally in Portland's water. Natural fluoride from the Bald Hill bores, averaging 0.96 mg/L in 2025-26.
State government directs water corporations.
Look up Wannon 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.