Protecting Calgary Schools and Workplaces from Radon

We often think of radon as a residential issue, but this radioactive gas doesn’t limit itself to houses. Calgary radon detection efforts have found elevated radon levels in schools and workplaces throughout the region—raising important questions about safety for both children and adults.Whether you’re a school administrator, business owner, teacher, or parent, understanding the risks of radon in schools and commercial buildings is key. This blog breaks down how radon enters public spaces, why testing matters, and how you can take action.

What Is Radon and Why Is It a Problem in Public Spaces?

Commercial radon gas is a naturally occurring, invisible, and odourless and tasteless substance that forms when uranium in the soil breaks down. As it rises from the ground, it can enter buildings through cracks in foundations, floor joints, drains, and other openings.In enclosed environments—especially basements and lower levels—radon can accumulate to high levels, presenting a serious health risk. Health Canada identifies radon as the leading cause of lung cancer in non-smokers and estimates that it is responsible for over 3,000 cancer deaths in Canada each year.

Why Schools and Commercial Buildings Are at Risk

You may assume large buildings like schools or office complexes would be safer because of ventilation. However, that’s not always the case. In fact, some design factors common to schools and commercial spaces may increase radon exposure risk:

• Large, open floor plans on ground levels
• Older foundations with unsealed expansion joints or sump pits
• Basement classrooms or offices
• HVAC systems that unintentionally draw air from beneath the structure

This is why radon testing in schools and workplaces is so important. Even buildings constructed to National Building Code standards are not automatically safe.

What the Science and Guidelines Say

According to Health Canada, the acceptable level of radon indoors is below 200 becquerels per cubic metre (Bq/m³). However, many schools and workplaces in Alberta—especially Calgary—have recorded radon concentrations that exceed this limit.The Canadian National Radon Proficiency Program (C-NRPP) certifies professionals to conduct accurate testing and install mitigation systems. Their guidelines align with Health Canada’s recommendations, including long-term testing protocols and corrective actions for buildings above the 200 Bq/m³ threshold.

How Is Radon Testing Done in Schools and Workplaces?

Radon testing in Calgary schools and commercial buildings usually involves placing radon test kits or digital monitors in rooms used regularly by occupants—especially those on lower floors.There are two primary methods:

• Short-term testing (2–7 days): Often used for quick assessments, such as in real estate or initial screenings.
• Long-term testing (90+ days): The most reliable way to measure average radon concentration over time, accounting for changes in ventilation, occupancy, and seasonal shifts.

After testing, test results are reviewed by professionals to determine if the levels are within safe limits. If not, a radon mitigation system may be recommended.

What Can Be Done If Radon Levels Are Too High?

If radon levels in schools or workplaces are found to be too high, the next step is mitigation. A certified contractor can install a radon mitigation system designed to lower indoor concentrations. These systems often involve:

• Sub-slab depressurization
• Sealing of entry points
• Upgrades to ventilation systems

Mitigation ensures the health risk from radon exposure is significantly reduced—protecting the safety of everyone in the building.

Calgary Leads the Way in Public Awareness

Thanks to growing awareness and access to professional radon testing and mitigation services, more Calgary institutions are taking action. School boards, childcare centers, and business owners are beginning to prioritize testing for radon as part of building safety protocols.If you’re a decision-maker in a school or workplace, or even a concerned parent or employee, now is the time to act. Radon testing in Calgary is affordable, accessible, and potentially life-saving.

Safe Spaces Start with Testing

Radon in Calgary schools and commercial buildings is a real concern—but one that can be solved. Testing is simple, science-backed, and the first step toward safer air. If you haven’t already tested your school, daycare, office, or warehouse, reach out to a certified professional for help.With accurate testing and proper mitigation, you can ensure your building meets Health Canada recommendations—and protect everyone inside from one of the most preventable cancer deaths in Canada.