Radon levels by province in Canada the 2012 survey, not a postal-code map
Health Canada estimated from long-term winter tests in 2009–2011 that 6.9% of Canadians lived in a home above 200 Bq/m³. That national figure hides the map. New Brunswick’s raw result was 24.8% of homes tested. Nunavut’s 78 homes in the same study were all under 200. The report’s own line is that no area of the country is radon-free.
Raw percentages count the homes actually tested. Population-weighted percentages pull the result toward where people live, which is why British Columbia falls from 7.9% raw to 3.9% weighted: the coast has the people, and the Kootenays have more of the high results.
| Province or territory | Homes in the survey above 200 (raw) | Population-weighted estimate |
|---|---|---|
| New Brunswick | 24.8% | 20.6% |
| Manitoba | 23.7% | 19.4% |
| Yukon | 19.6% | 19.6% |
| Saskatchewan | 16.3% | 15.7% |
| Nova Scotia | 8.8% | 10.7% |
| Quebec | 10.1% | 8.2% |
| Ontario | 8.2% | 4.6% |
| British Columbia | 7.9% | 3.9% |
| Alberta | 6.6% | 5.7% |
| Newfoundland and Labrador | 5.9% | 5.1% |
| Northwest Territories | 5.4% | 5.4% |
| Prince Edward Island | 3.5% | 3.5% |
| Nunavut | 0% (78 homes) | 0% |
| Canada | — | 6.9% |
Cities that do not match their province
Winnipeg 12.1% of 66 homes, Brandon 44.3% of 79. Regina Qu’Appelle 25.5%, Saskatoon 7.9%. Toronto 2.7%, Leeds Grenville and Lanark 19.4%. Vancouver 1.2%, Kootenay-Boundary 29.3%. Gaspé and the Magdalen Islands 25.3% inside a Quebec raw average of 10.1%.
Read the place, then test the house
Brandon, Regina, Castlegar, Toronto, Yukon, Nunavut. French version: radon par province.
The 4-day test is a first reading. The 91-day test is the length Health Canada uses to judge a heating season. Both are $59 before tax. Shipping, the prepaid return and the lab are included. Tax is extra. The PDF report is emailed within 2 business days after the lab receives the detector.
Above 200 Bq/m³, the fix is a fan that pulls soil gas from under the slab and exhausts it above the roof. Gaz Radon is C-NRPP certified for testing and for mitigation, and ships kits across Canada. Start from the Canada test page.
Source: Health Canada, Cross-Canada Survey of Radon Concentrations in Homes, long-term tests in the 2009–2011 heating seasons, report published in 2012. A health-region percentage is not a reading for one address.
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