Independent radon information for Canadian homes and buildings
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← Radon 101

Understand your result

Your number. Your next step.

Use your home test report or monitor’s long-term average. Your answers stay on this page and are not stored or sent to us.

Use Bq/m³, not pCi/L. Check the unit on your report before entering a number.

For home testing. This guide cannot validate your device, report or test conditions.

Before you begin

Check the test as well as the number.

A brief reading can fluctuate. A suitable long-term test helps you decide what to do.

200 Bq/m³Canada’s guideline, not a risk-free boundary.
Review how to test your home →

Based on Health Canada guidance

Radon guideline and action timing ↗Home-testing instructions and the 200 Bq/m³ action threshold ↗

Checked 22 September 2026. General guidance, not an individual assessment. If you rent, keep the report and discuss next steps with the person who can authorize work.