Radon is a cancer-causing radioactive gas. You can’t see it, smell it, or taste it, but radon is estimated by the Environmental Protection Agency to cause over 20,000 deaths annually (more deaths than drunk driving).
Because when you breathe in radon gas over a period of time, you can contract lung cancer. The higher level of radon you are exposed to, and the longer the exposure, the greater the risk of eventually developing lung cancer.
Smokers are at 7-8 times more risk of lung cancer with radon exposure. Radon is 5 to 6 times more dangerous to your lungs than secondhand smoke.
Radon comes from the natural (radioactive) breakdown of uranium in soil, rock and water and gets into the air you breathe. Radon can be found all over the U.S. It can get into any type of building - homes, offices, and schools - and result in a high indoor radon level. But you and your family are most likely to get your greatest exposure at home, where you spend most of your time.
Testing is the only way to know if you and your family are at risk from radon. EPA and the Surgeon General recommend testing all homes below the third floor for radon. EPA also recommends testing in schools.