Last updated on July 22, 2025
Radon is a radioactive, invisible, odorless gas that is the number one cause of lung cancer after smoking. Radon comes from uranium-rich rocks and soil and can seep into buildings through cracks in the foundation and other small openings. Testing your home for radon is an easy way to prevent cancer, especially if you live in an older home.
Pennsylvania radon levels are exceptionally high because of the geological composition of our state, meaning that there is a large amount of uranium-rich rocks and soil, and our soil is very porous, allowing for radon to work its way up to the surface.
The average radon level in Pennsylvania homes is 7-8 picocuries per liter (pCi/L), while a normal level of radon is 4 pCi/L or less.
Although radon is a big problem in Pennsylvania, the state does not have any laws requiring radon testing. Therefore, homeowners and renters must decide for themselves whether to test. Consider the age of your property and the condition of the foundation when thinking about testing as both are related to the amount of radon that could enter the home.
Along with an air sensor, we will provide radon testing kits to every community partner. Typically, radon testing should be performed in the basement, or area closest to the earth. Immediate action should be taken at any level above 4 pCi/L. To reduce levels of radon, improve air filtration, seal cracks in the foundation, or contact a qualified professional to install a radon reduction system.
Learn more about radon on the EPA’s radon page. And the health risks of radon here.
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