Reduce Radon Levels

What to do if your home radon levels test above Health Canada's guideline of 200Bq/m3

Take action to reduce your radon levels

There are different methods to reduce the level of radon in a home or building. The effectiveness of the radon reduction method that is used will depend on the unique characteristics of a home or building, the level of radon, the entry routes for radon, and the quality of work done. A single method may reduce radon levels but, in some cases, a combination of methods must be used to get the desired results.

Many radon reduction measures require installation by a professional contractor, including:

  • Closing major entry routes for radon (e.g. sump pumps that are open, floor drains, exposed soil, voids in concrete block walls, etc.)
  • Reducing forces that draw radon into the home
  • Depressurizing soil around the foundation
  • Sealing any remaining entry routes for radon

Contact a certified radon service provider for more information about the above methods and reducing your risk:

National Radon Proficiency Program or 1-800-269-4174

How soon to take action to reduce radon levels

If the radon level in your home is above the Canadian guideline of 200 Bq/m3 you should take action.

These following guidelines should be followed to reduce risk:


Did you know?

About seven per cent of homes in Canada have radon levels above the Canadian guideline of 200 Bq/m3. See Health Canada's Cross-Country Survey of Radon Concentrations in Homes for more information.

*Radon: What you need to know. Health Canada, 2011. Reproduced with the permission of the Minister of Health, 2012.