What is typically used as a baseline for average indoor radon levels in homes?

The baseline for average indoor radon levels in homes is 1.3 pCi/L. This figure is significant because it reflects the recommended action level established by the Environmental Protection Agency (EPA) for evaluating radon exposure in residences. Exposure to radon levels at or above this baseline is considered a health risk and may warrant remediation efforts to lower the levels. Understanding this baseline allows homeowners and radon measurement professionals to make informed decisions about testing and addressing radon gas in living spaces, thereby enhancing public awareness of radon-related health risks. Levels above 1.3 pCi/L underscore the importance of testing and potential mitigation to reduce radon exposure.