What is the estimated average indoor radon level?

The estimated average indoor radon level is typically reported as 1.3 pCi/L. This figure is significant because it represents the median radon concentration found in homes across the United States, taking into account various factors such as geographic location, building construction, and ventilation practices.

Radon is a naturally occurring radioactive gas that can seep into homes, particularly those that are built on soil rich in uranium. Understanding that the average level is set at 1.3 pCi/L helps homeowners and professionals recognize the baseline for concern. The U.S. Environmental Protection Agency (EPA) recommends action to be taken if radon levels are at or above 4 pCi/L, which is why the average is essential for determining safety measures and when further testing or mitigation may be required.

This knowledge provides a context for addressing radon levels and emphasizes the importance of testing in homes, especially in areas known to have higher natural radon concentrations. Radon testing is crucial for ensuring a safe living environment, as exposure to elevated levels can pose significant health risks, including an increased risk of lung cancer over prolonged exposure.