Calgary reintroduces fluoride to its drinking water – CTV
June 30, 2025
After more than a decade without it, fluoride is now being reintroduced into Calgary’s drinking water.
The City of Calgary began adding fluoride at a concentration of 0.7 milligrams per litre – the optimal level recommended by Health Canada to help prevent tooth decay – on Monday.
While fluoride does occur naturally in water at lower levels, the mineral was first manually added into Calgary’s water in 1991.
It was eventually decided by city council to discontinue the practice in 2011.
The decision to reintroduce fluoride followed a 2021 plebiscite held during the municipal election, in which 62 per cent of voters supported its return.
In response, the city invested $28.1 million in infrastructure upgrades to facilitate the fluoridation process.
Ongoing operation and maintenance are expected to cost an additional $1 million annually.
With this step, Calgary joins many other municipalities in Canada and around the world in embracing fluoridation.
Read more: https://www.ctvnews.ca/calgary/article/calgary-reintroduces-fluoride-to-its-drinking-water/
