Radon testing guides

Le radon est un gaz radioactif qui se forme dans le sol quand l’uranium se dégrade. Il entre par les fissures de la fondation et les joints des tuyaux. L’isolation et une maison étanche le retiennent à l’intérieur. Des années d’exposition causent le cancer du poumon, et ce gaz reste méconnu. Utilisez la recherche pour les mots que les gens cherchent : gaz radioactif, uranium, fondation, maison étanche, cancer du poumon, becquerels.

Radon in Yellowknife: the territorial sample was 5.4%, with no city row

A moderate territorial result. It does not certify one house in Yellowknife.

25 oct. 2026

Radon in Whitehorse: the Yukon figure is 19.6%, and 5.8% were above 600

Most Yukon homes are in Whitehorse. The high tail above 600 is the reason to test this winter.

25 oct. 2026

Radon in Castlegar: 29.3% in Kootenay-Boundary, and a later survey over half

The interior B.C. result people should actually read, with the year attached to each number.

25 oct. 2026

Radon in Kelowna: the Okanagan health area tested at 17.4%

The interior of British Columbia tested much higher than the coast in the same survey.

25 oct. 2026

Radon in Vancouver: 1.2% of 83 homes, which is not British Columbia

Vancouver tested low. Castlegar’s health area did not. Do not carry one number across the province.

25 oct. 2026

Radon in Fredericton: New Brunswick health region 3 tested at 17%

The province is high. The health regions inside it are not copies of each other.

25 oct. 2026

Radon in Halifax: the 2012 survey has no Halifax-only line

Granite is a reason to test. It is not a street-level percentage.

25 oct. 2026

Radon in Guelph: the Wellington-Dufferin-Guelph health unit tested at 10.9%

Guelph’s health unit ran higher than Waterloo and higher than Toronto in the same survey.

25 oct. 2026

Radon in Hamilton: 5.0% of 100 homes in the 2012 sample

Hamilton sat near the Ontario weighted average. Nearby health units did not.

25 oct. 2026

Radon in Kingston: 11.1% of homes in the 2012 health-unit sample

Eastern Ontario limestone country tested higher than the GTA in the same survey.

25 oct. 2026

Radon in Ottawa: 6.2% of 64 homes, between Toronto and Kingston

A mid-pack Ontario result on a short sample. Gatineau, across the river, was a different Quebec region.

25 oct. 2026

Radon in Toronto: 2.7% of 73 homes, which pulls the Ontario average down

Toronto tested low in 2012. Leeds, Grenville and Lanark tested at 19.4%. Do not export Toronto’s number.

25 oct. 2026

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