Lead in Ottawa School Water Tests Prompt Parental Alarm
Ottawa parents are hand-delivering water to schools after tests reveal lead contamination; OCDSB had Canada's worst results.
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Parents in Orleans are now hauling cases of bottled water to school every morning — a two-minute walk turned into a supply chain after lead showed up in their children's drinking fountains.
Since March, Crystal Mask and her husband Garrett Hansen have dropped off eight cases of safe water to Fallingbrook Elementary's kindergarten classroom. They're not alone. Across the province, lead has been seeping into school drinking water through corroded plumbing, with many Ottawa schools testing above Ontario's allowable limit of 10 parts per billion.
A March 2026 report by the Canadian Environmental Law Association (CELA) ranked schools and boards across Canada. The Ottawa-Carleton District School Board had the worst record: 104 water fountains and taps exceeded Ontario's 10 ppb limit, and 156 tests exceeded the federal guideline of 5 ppb in 2024-2025. That's the highest count in Canada.
Ontario remains one of only two provinces that hasn't adopted Health Canada's stricter 5 ppb limit, keeping the original 10 ppb standard. Saskatchewan is the other holdout.
Lead enters water mainly through corrosion in plumbing systems. Health Canada's research shows exposure can cause reduced cognition, increased blood pressure, and kidney issues in adults, plus developmental and behavioural problems in children. Over four decades, Canada phased lead out of paint and gasoline, leaving water and food as the main sources.
The Ottawa Catholic School Board, the city's second-largest, also tested positive for lead, though CELA's analysis didn't detail its full count. Parents and school boards are now demanding transparency and action as the contamination becomes a flashpoint for water safety in the capital's classrooms.