Radon is a radioactive gas that comes from the natural breakdown of uranium that is found in nearly all soils. This gas moves through the earth and enters buildings through cracks and/or holes in foundations and floors and accumulates. The Environmental Protection Agency (EPA) and Surgeon General have identified Radon gas as the second leading cause of lung cancer in the United States.

Living in a home with elevated radon readings for a long period of time significantly increases your chances of contracting the disease. The risk is even more pronounced if you smoke or have ever smoked.

We strongly recommend that you test your home for radon…whether you are currently living in the home or plan to purchase the home.

The only way to determine if you are at risk for high radon levels in your home is to perform radon testing. The EPA and Surgeon General recommend testing for all homes below the third floor. EPA further recommends that homes with high radon concentration be mitigated. We do not perform or recommend radon mitigation services.

Map of Radon Zones for Pennsylvania

• Homes with elevated levels of radon have been found in all three zones.
• All homes should be tested regardless of geographic location.

Pennsylvania’s Highest Radon Potential Counties (Red on map) include Berks, Bucks, Montgomery, Delaware and Chester Counties. The potential average indoor radon screening level for RED counties is greater than 4 pCi/L (picocuries per liter). The EPA recommends mitigation for elevated (4.0 pCli/l or higher) results.