Quebec Radon Standard
Quebec Radon Standard — what you need to know
Quebec radon standards are evolving with the 2025 Building Code and CAN/CGSB-149 standards for mitigation. Homeowners must test and act if the level exceeds 200 Bq/m³.
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Frequently asked questions
What is the radon standard in Quebec?
Health Canada recommends 200 Bq/m³. The 2025 Building Code incorporates preventive measures for new constructions.
What does CAN/CGSB-149 cover?
These standards govern radon measurement and mitigation methods in buildings across Canada.