What is Radon?

Radon is a colorless, odorless, and tasteless radioactive gas that occurs naturally as a byproduct of the decay of uranium and thorium in the Earth's crust.

The primary sources of radon are soil, rocks, and groundwater. This radioactive gas can seep into buildings through cracks and gaps in the foundation, where it can get trapped and potentially affect indoor air quality. Certain building materials – such as concrete, stone or brick – may also release small amounts of radon contributing to exposure. Due to the colorless, odorless, and tasteless characteristics of this chemical element, it can be in heavy concentrations within your home without knowing it.

There is no way to completely eliminate radon, but you can measure and reduce the levels in your home.

Long-term exposure to high levels of radon is associated with an increased risk of lung cancer, something that not many people are aware of. In fact, radon is considered the second leading cause of lung cancer after smoking. The radioactive decay products of radon, such as polonium and lead, can attach to dust and other airborne particles. This radiation damages lung tissue and increases the likelihood of cancer developing years after exposure. The risk increases with both the concentration of radon and the length of time a person is exposed to radon. 

What can you do to minimize your health risks?

To mitigate the risks associated with prolonged exposure, it's important to test for unsafe levels in the air and water within homes, schools and workplaces. Testing for radon gas is relatively simple, inexpensive, and can be done using an easy-to-use radon test. If levels are determined to be too high, you should immediately take measures to reduce it. This may involve improving ventilation, sealing cracks and gaps in the building structure, and installing a radon mitigation system. While radon cannot be prevented from forming naturally, its impact on your health can be controlled with awareness and action.

Explore our resources to learn more about radon safety and how to ensure your home is a healthy space.