What Are Safe Radon Levels in Canadian Homes?
Radon gas is a silent threat to indoor air quality, and understanding its levels is vital for protecting your home and family. This guide will help you decode radon gas levels and clarify when it’s time to take action. In Winnipeg and across Manitoba, radon levels are often higher than the national average, which is why testing is especially important for local homeowners.
What Are Radon Levels and What Do They Mean?
Radon gas levels are measured in becquerels per cubic meter (Bq/m³). A becquerel (Bq) represents one radioactive decay per second. When radon gas decays, it releases radioactive particles that can damage lung tissue and increase the risk of lung cancer.
In Canada, radon gas levels are categorized as:
Safe Levels: Below 200 Bq/m³. Health Canada considers these levels acceptable, though the World Health Organization (WHO) recommends reducing radon if levels exceed 100 Bq/m³.
Actionable Levels: Between 200 and 600 Bq/m³. At this stage, homeowners should seriously consider mitigating radon to prevent long-term health risks.
Dangerously High Levels: Above 600 Bq/m³. Immediate action is required to reduce exposure, as prolonged contact significantly increases the risk of lung cancer.
How High Can Radon Levels Get?
According to the 2024 Cross-Canada Radon Survey, the highest residential radon level recorded was an alarming 32,321 Bq/m³. This reading highlights the need for testing, as levels can vary drastically depending on geographic location, home structure, and ventilation. Neighbouring homes can test differently.
Why Radon Levels Can Vary From Home to Home on the Same Street
Radon levels can be very different, even between homes on the same street.
That’s because radon enters through the ground, and factors like soil composition, foundation type, cracks, sump pits, and airflow all affect how much radon builds up inside a home.
Two houses that look identical above ground can have very different radon levels inside.
Because of this, there’s no reliable way to estimate your home’s radon level based on location alone.
If you’ve been wondering about your home, the only way to get a clear answer is to test. If you live in Winnipeg, book a test with us.
Why Should You Take Action?
Radon exposure is the leading cause of lung cancer in non-smokers. Long-term exposure to elevated radon levels increases this risk exponentially. For instance:
At 200 Bq/m³, your lifetime risk of lung cancer is approximately 1 in 100.
At 800 Bq/m³, the risk rises to 1 in 20.
How to Detect Radon Levels in Your Home
DIY Long-Term Test Kits: Available online or at hardware stores for $40 to $150. These tests provide accurate results over 90 days.
Short-Term Tests: Professionals like Radon86 can conduct a quick 15-minute assessment for free, offering immediate guidance.
When Should You Remediate?
If radon levels exceed 200 Bq/m³, mitigation is recommended. Professionals use methods like sub-slab depressurization to effectively lower levels. Costs for mitigation systems typically range from $1,500 to $3,000, depending on your home’s size and layout. Learn more about radon mitigation here.
How Much Does Radon Testing and Mitigation Cost?
The cost of radon testing and mitigation can vary depending on your home and what’s required.
Testing is typically a straightforward, relatively low-cost way to understand your home’s radon levels. We offer a free 15 minute, on-the-spot test to give you a general idea. If elevated levels are found, mitigation systems are designed to reduce radon safely and effectively, with costs varying based on the home’s size and layout.
For most homeowners, testing is the first step, followed by mitigation only if needed.
If you’re considering your options, you can learn more about typical pricing and what’s involved here: how much does radon testing and mitigation cost
Takeaway
Radon gas is an invisible danger, but its risks are manageable. Testing your home is the first step. Whether your levels are moderate or dangerously high, timely action can protect your family’s health. Don’t wait, test, mitigate, and breathe easy.
Radon Testing in Winnipeg
If you’re in Winnipeg and want to know your home’s radon level, the next step is simple: test it.
We offer a straightforward 15-minute spot test and consultation to help you understand your results and what to do next. If levels are elevated, we can also design a mitigation system tailored to your home. Book a test or request a mitigation quote here or give us a call at 204-807-1340