Toronto's Don River carries 36,000 kg of microplastics into Lake Ontario each year: Study

Toronto's Don River Carries Microplastics into Lake Ontario

Researchers at the University of Toronto have found that Toronto's Don River carries over 500 billion microplastic particles into Lake Ontario each year, equivalent to about 36,000 kilograms.

This amount is comparable to the weight of 18 cars, highlighting the significant impact of microplastics on the environment.

Reducing the use of single-use plastics has a significant impact on preventing litter from entering rivers and other aquatic ecosystems.

Author's summary: Toronto's Don River pollutes Lake Ontario with microplastics.

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University of Toronto University of Toronto — 2025-10-25

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