Radon levels found high in 21% of social housing units

A report found elevated radon readings in 21% of social housing units while most such units have not been tested. A 2024 cross‑Canada study reported about 18% of homes at or above 200 Bq/m³ and another 24% with levels between 100 and 199 Bq/m³.

A recent article reports that 21% of social housing units were found to have high radon readings while most units have not been tested. The article notes testing is uncommon across social housing and raises questions about measurement coverage. It references a 2024 cross‑Canada study led by a researcher that measured radon across the housing stock. That study reported a notable share of homes with elevated readings relative to national and international guidelines. Key findings: - 21% of social housing units were reported as having high radon levels. - Most social housing units have not been tested for radon, according to the article. - A 2024 cross‑Canada study reported about 18% of residential properties at or above 200 Bq/m³ (Canada's guideline). - The same study reported an additional 24% of homes with radon levels between 100 and 199 Bq/m³ (the World Health Organization benchmark). Summary: The article and the referenced study together indicate that elevated radon is present in a notable portion of social housing and the wider housing stock, while testing coverage in social housing appears limited. Undetermined at this time.