Radon Testing

Purchase a Radon Test Kit Online

For a list of Ontario suppliers, visit Take Action on Radon - Where to buy test kits.

What is Radon?

Radon – you can’t see it, smell it or taste it, but this naturally occurring gas can leak into your home from soil, rock and groundwater. It’s also the second leading cause of lung cancer.

The most common points of entry for radon are cracks in the foundation, drains and spaces around pipes. In enclosed spaces, typically on the lowest level of your home is where the gas can accumulate.

High levels of radon present a health risk: radon is the second leading cause of lung cancer after smoking. The risks of developing lung cancer from radon are greater for smokers and those exposed to second-hand smoke. The only way to know the level of radon in your home is to test for it.

Testing your home for radon is easy and inexpensive. We suggest using an approved long-term radon detector (from this list of approved devices) for at least three months. The best time to test is between September and April, when windows and doors are usually closed. If the radon level in your home is high, there are steps that you can take to lower it.