Radon is an odorless, tasteless, colorless gas. It is created when the element radium, breaks down through radioactive decay. Radon is the leading cause of lung cancer among non-smokers and kills 21,000 people every year.
Radon is a naturally occurring radioactive gas produced in soil, rock and water. Air pressure inside your home is usually lower than pressure in the soil around the foundation, and acts as a vacuum to draw radon in through foundation cracks and openings.
All housing structures in all areas of the country are at risk of high radon levels. Even if your home tested low in radon, your home could still have dangerous levels.
Radon is measured in pico-Curies per liter of air (pCi/L). The average indoor radon level is estimated to be about 1.3 pCi/L, and about 0.4 pCi/L is found normally in the outside air. If your test result in a 4 pCi/L or more, your home needs to be fixed.
If your test results show that radon levels are high, the EPA recommends that you have a qualified radon mitigation contractor fix your home. There are several methods a contractor can use to lower radon levels in your home. Some prevent radon from entering your home and others reduce radon levels after it has entered.