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High levels of lead found in air around Kahnawake high school, near Montreal

Seven preliminary tests found lead levels near the Kahnawake Survival School at 1.5 times the provincial standard, council officials said.

  • The Mohawk Council of Kahnawake released preliminary test results showing elevated lead levels near the Kahnawake Survival School, located less than a kilometre from an industrial area on the South Shore of Montreal.
  • Kahnawake Grand Chief Cody Diabo said the community has long-standing contamination concerns due to surrounding industrial activities, with concerns resurfacing after January reports regarding the Terrapure waste management facility.
  • Analysis showed lead levels averaged 1.5 times the provincial standard of 100 nanograms per cubic metre when wind blew west, while levels were "well below" the threshold when wind blew east, occurring 80 per cent of the time.
  • Mylène Ratelle, a professor at the Université de Montréal, described the data as an early snapshot requiring further study, while Jason Calvert, operations manager for the board of education, said the school plans to test its air filtration system.
  • The council is working with Environment Canada to determine the lead source; Terrapure General Manager Denis Beaulieu stated the company employs control systems "to collect and treat emissions before discharge to the environment.
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The Toronto StarThe Toronto Star
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High levels of lead found in air around Kahnawake high school, near Montreal

MONTREAL - The Mohawk Council of Kahnawake has released preliminary test results it says show high levels of lead in the air close to the community’s high school.

·Toronto, Canada
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Winnipeg Free Press broke the news in Winnipeg, Canada on Wednesday, September 23, 2026.
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