Radon is a radioactive element that is part of the radioactive decay chain of naturally occurring uranium in soil. Radon gas from soil can enter buildings through gaps and cracks in the foundation or through crawl spaces.

According to the EPA, studies find direct evidence linking radon in homes to lung cancer.

It is especially dangerous because you can’t see it, smell it or taste it. Unlike carbon monoxide and many other home pollutants, radon’s adverse health effects occur over time with frequent exposure to high levels of radon gas.

The EPA has determined that concentrations of more 4.0 picocuries per liter of air (pCi/L) represent a serious health risk. The risk of developing lung cancer above 4.0 pCi/L is estimated at about 7 lung cancer deaths per 1000 persons.

Bi-annually radon gas testing is highly recommended and can often save lives.

When radon test results reveal radon levels higher than 4.0 (pCiL), radon mitigation is highly recommended. In Illinois, radon mitigation must be done by a state licensed professional.

Haven’t tested yet? Click here for a list of Radon Testers in the area.


Lung cancer in humans resulting from radon exposure is recognized by the following health and environmental organizations
  • American Medical Association
  • U.S. Surgeon General
  • U.S. Department of Health and Human Services
  • U.S. Public Health Service
  • U.S. Environmental Protection Agency
  • Center for Disease Control
  • National Academy of Science
  • National Cancer Institute
  • World Health Organization