Radon | Niagara Region

Radon is a naturally occurring, radioactive and odorless gas produced by the breakdown of uranium in soil and rock. It enters buildings through foundation cracks, pipes, drains and other openings.

When radon accumulates indoors, it can reach high levels and become a serious health risk. Radon is the second leading cause of lung cancer after smoking.

While radon is diluted and not a concern outdoors, it can build up indoors – especially in basements and lower levels of homes.

Why radon matters

Radon is found in every home, but levels vary

You cannot see, smell or taste radon

A battery marked with the plus and minus signs

The only way to know your level is to test

Homes in any community can have elevated levels

How to detect and reduce radon

Testing your home is simple and is the first step to reducing your risk.

Testing your home

Use a long-term (minimum 3 months) do-it-yourself test kit or hire a certified professional
Testing is recommended during the heating season (fall / winter) when windows are closed, allowing for a more accurate reading
Testing can be done at any time of year

If high radon levels are found

Proven mitigation methods can significantly reduce radon levels
The most common method is a sub-slab depressurization system, installed by a certified professional
Improvements in ventilation may also help

Radon and health

Long-term exposure to high radon levels typically causes no immediate symptoms, but it increases the risk of lung cancer over time.

The risk increases with higher levels and longer exposure
Smokers are at significantly greater risk than non-smokers
Radon exposure is responsible for a substantial portion of lung cancer deaths in Canada

The best way to reduce the risk is to test your home and lower radon levels if needed.