Fluoride by province & territory
Alberta
British Columbia
Manitoba
New Brunswick
Newfoundland and Labrador
Nova Scotia
Ontario
Prince Edward Island
Québec
Saskatchewan
Northwest Territories
Yukon
*Data updated and verified November 2026 from official municipal and government sources.
Fluoridation - Understanding the data
Fluoride can be present in Canadian drinking water in two ways: it is added by some municipalities as part of community water fluoridation, and it occurs naturally in some groundwater sources. Whether fluoride is added is decided at the local level, so practices vary from one community to the next. These differences can influence:
- Fluoridation status: whether your municipality currently adds fluoride, has never fluoridated, or has discontinued the practice
- Concentration levels: how much fluoride is in your water compared to the Health Canada maximum acceptable concentration (MAC) of 1.5 mg/L
- Naturally occurring fluoride: levels in private wells and some groundwater supplies, which can vary widely depending on local geology
- Source water differences: how fluoride levels may differ between surface water and groundwater systems, or between neighbouring communities
- Treatment selection: which point-of-use or whole-home systems are effective for reducing fluoride, since common options such as standard carbon filters and water softeners do not remove it, while reverse osmosis can
- Knowing whether your water contains added fluoride is helpful for choosing water filters and treatment products that match your goals
This information allows individuals and organizations to better understand their local water supply and make informed decisions about water treatment, maintenance, and risk management.
Why is fluoride added to drinking water?
Community water fluoridation is intended to reduce tooth decay. At low levels, fluoride helps strengthen tooth enamel and can help repair the early stages of decay. Brantford, Ontario was the first Canadian community to fluoridate its water, beginning in 1945.
Fluoridation is supported by Health Canada, the Canadian Dental Association, and most public health organizations, which consider it an effective way to reduce cavities across a whole population. Those who oppose it raise concerns about individual choice, note that fluoride is now widely available through toothpaste and dental treatments, and point to recent studies on possible health effects at higher exposure levels. Research on effects at levels used in community fluoridation is ongoing.
Need to know your City's Water Hardness or Disinfectant Type too?
Check out our comprehensive water hardness and chlorine or chloramine data for Canadian municipalities. All data is obtained directly by Aquatell from verified primary sources.
See Water Hardness by Canadian Province See Chlorine or Chloramine by Canadian Province
