Toronto Public Health

Environmental Health

Healthy people need healthy environments. By working together with our community and partners we are helping create a healthy environment for all.


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Air Quality

Information about the air quality initiatives by Toronto Public Health, Air Quality Health Index, Smog and your health, idling by-law.

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Bed Bugs

Information on how to identify bed bugs, prevent them, and deal with an infestation.

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Lyme Disease

Information on Toronto Public Health's Blacklegged Tick Surveillance program and surveillance results.


Built Environment

Information on how buildings, transportation systems, energy systems, open space, and agricultural lands make up and support our communities.



Find out information about ChemTRAC, which aims to improve public health and support a green local economy by reducing toxic chemicals in our environment.

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Environmental Pollutants

Our environment, the air we breathe, the land we walk on and the spaces we spend our time in, impact our health.


Heat Warnings

From May 15 to September 30 of each year, Toronto Public Health staff monitors the heat health alert system to determine when the Medical Officer of Health should declare a heat or extreme heat alert.

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Rabies Prevention and Control

Toronto Public Health works with health professionals to reduce the risk of rabies in humans by investigating exposures to animals. Find out more about rabies prevention in Ontario.

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Inspection results of Toronto's public pools and spas (hot tubs) and water quality testing at the city's supervised beaches.

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West Nile Virus

WNV Information on reducing risk, larviciding, surveillance/reporting and fact sheets.