What is the average indoor radon level typically measured in pCi/L?

The average indoor radon level typically measured is around 1.3 picocuries per liter (pCi/L). This value is significant because it represents the expected baseline exposure for many homes and indoor environments. Indoor radon originates from the natural breakdown of uranium found in soil, rock, and water, and it can accumulate in buildings, particularly in lower levels like basements where the soil contact is greatest.

Understanding this average level is crucial for assessing radon risks, as values above this can indicate a potential health hazard that may require further testing or mitigation efforts. If a radon measurement is 4 pCi/L or higher, action is generally recommended, while levels near the average, such as 1.3 pCi/L, are typically considered acceptable. This measurement thus serves as a benchmark for health standards and safety practices related to radon exposure in residential settings.