The U.S. Environmental Protection Agency (EPA), the center for Disease Control and Prevention (CDC) and your state health department strongly recommend that all homebuyers have an indoor radon test performed prior to purchase or taking occupancy and recommend mitigation if elevated radon concentrations are found. Elevated radon can easily be reduced by a certified or state licensed, if applicable by a radon mitigator. All homes should be tested regardless of geographic foundation type. Radon is a Class A human carcinogen, the leading cause of lung cancer in non-smokers and the second leading cause overall.