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Why is Radon a Concern?Radon is a naturally occurring radioactive gas that can build up inside homes. Long-term exposure to elevated radon levels can damage lung tissue and increase the risk of lung cancer over time.Radon is colourless, odourless, and cannot be detected without testing, which means many homeowners are unaware of elevated levels in their homes. In Ontario, radon exposure is linked to hundreds of lung cancer cases each year, according to public health data.Radon levels can be measured through professional testing or do-it-yourself test kits. Once results are known, homeowners can decide whether mitigation is needed based on established health guidelines.Radon concentrations are measured in becquerels per cubic metre (Bq/m³) in Canada. Health Canada recommends taking action when levels reach 200 Bq/m³, while other organizations suggest lower thresholds. Reducing radon levels can significantly lower long-term health risks.
What is Radon?Radon is a naturally occurring radioactive gas produced by the breakdown of uranium in soil and rock. It can move through the ground and enter homes through cracks and openings in foundations, where it may build up indoors.Radon is colourless, odourless, and cannot be detected without testing. Long-term exposure occurs when radon is inhaled, which is why testing and, if needed, mitigation are important.Radon cannot be eliminated entirely, but proven mitigation systems can reduce indoor levels by 80–90%, following the principle of As Low As Reasonably Achievable (ALARA).