Radon Map of Quebec: Your Essential Guide to Identifying Risk Areas

December 1, 2024

After the map — take the test

Order a certified radon detector in Quebec

The map shows risk areas. The only way to know the level in your home is a certified test — 4 days for screening or 91 days (recommended by Health Canada).

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🔍 Check radon data for your area

Enter your postal code to view official regional data published by the Quebec Lung Association.

👉 Even in a low-risk zone, a test is recommended.

⚠️ Is your home dangerous?

Up to 1 in 5 homes exceed 200 Bq/m³ in Quebec.
Radon is invisible… but can cause lung cancer.

✔ Simple test to perform
✔ Health Canada compliant

👉 The only way to know: test your home.

🔴 Test my home now

👉 Every day without a test = radon exposure

Quebec Radon Map: Risk Zone Map and Complete Guide

Radon, a natural radioactive gas, is a major public health issue in Quebec. Invisible and odorless, it can accumulate in homes and increase the risk of lung cancer. Thanks to the Quebec Radon Map, it is possible to identify areas where high concentrations have been measured.

In summary: the map identifies statistical zones, but regardless of the region, all homes can have high levels of radon. Testing your home remains the only reliable method, and if levels are high, a mitigation solution exists.

Why the Quebec Radon Map is important

The Quebec Radon Map is an interactive tool developed by the Quebec Lung Association. By entering a postal code, users can consult available regional data concerning radon.

The Quebec radon map identifies risk areas, but each home is unique. Even in a low-risk area, high concentrations can be measured.

⚠️ Important:

Even in a low-risk area, a home can exceed 200 Bq/m³.

👉 1 in 5 homes in Quebec is at high risk.

Test my home now →

What is radon and why should you be concerned?

Radon comes from the natural decay of uranium in the soil. It can infiltrate buildings through foundation cracks, drains or joints. When it accumulates to high levels, it becomes a significant cause of lung cancer.

Consulting a radon map of Quebec is a first step, but it does not replace an actual test in your home. Each property is different and may have a unique level.

Some key statistics

Approximately 1,000 deaths per year in Canada are linked to radon.
Nearly 1 in 5 homes in Quebec exceeds 200 Bq/m³.

Real-life example

Home tested: 380 Bq/m³
After mitigation: 45 Bq/m³

✔ Fast and lasting reduction
✔ Installation in one day in most cases

👉 A solution exists if your level is high.

See mitigation solutions →

How to test your home for radon

Order a certified radon detector.
Perform the measurement according to the recommended protocol.
Intervene if the threshold of 200 Bq/m³ is exceeded.

Customer testimonial

“Our house was at 350 Bq/m³. After installation, we dropped to 40. Fast and professional service.”

– Residential client, Quebec

Don't take unnecessary risks

Radon is invisible, but its effects are very real.

👉 Every day without a test = potential exposure.

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Long-term test (recommended)

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Short-term test

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Frequently asked questions about radon in Quebec

Can all homes in Quebec have radon?

Yes. Regardless of the region or type of building, any home can have a high level of radon. The only way to know is to measure directly in your home.

What is a dangerous radon level?

Health Canada recommends intervening when the concentration exceeds 200 Bq/m³. However, it is best to reduce radon to the lowest possible level.

How much does a radon test cost?

A certified radon detector is generally affordable and provides a representative measurement for your home.

How to reduce radon in a home?

The most effective method is the installation of an active sub-slab depressurization system, which captures radon under the foundation and vents it outside.