The Environmental Protection Agency (EPA) has identified the action level of 4 picocuries per liter (pCi/L). Results at or above 4 pCi/L are considered elevated and mitigation is recommended, however mitigation decisions should not be based upon a single test result.
Licensed or credentialed radon mitigation contractors can install a radon mitigation system that lowers radon levels in your home. The goal of installing a radon mitigation system in a home is to reduce radon to the lowest possible level.
Additional Information about mitigation: