Radon is a colourless, odourless radioactive gas that occurs naturally as uranium breaks down in soil, rock and water. Although radon can enter homes through well water or even through some construction materials, such as granite or concrete, the greatest risk of radon entry into a home is through the soil.
It’s important to note that all homes can be at risk for having high levels of radon, regardless of age or location. This gas may be present in any region of the country and in all types of terrain. In fact, two homes right next to each other could have widely varying levels of this gas. That means that every home must be tested because there’s simply no way to predict if yours will or will not have high levels.