What levels of Radon are considered dangerous?

Homes with high levels of radon have been found in every state. In fact, radon levels can vary greatly from home to home--even levels next door can be very different. Radon is measured in picocuries per liter of air (pCi/L), a measurement of radioactivity. In the United States, the average indoor radon level is about 1.3 pCi/L. The average outdoor level is about 0.4 pCi/L. The U.S. Surgeon General and EPA recommend fixing homes with radon levels at or above 4 pCi/L. EPA also recommends that people think about fixing their homes for radon levels between 2 pCi/L and 4 pCi/L.

What to do when Radon levels are elevated?

If your home already has an active Radon mitigation system, please, check that it is functioning properly (power, fan function, exhaust piping). In all other cases and if elevated levels persist over longer periods, please contact your local Radon Professional. To temporarily lower your levels, you can increase your homes ventilation with air from outside.

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Short-term vs long-term elevated levels

The EPA defines short-term testing anything shorter than 90 days. It is important to note that short term increases can be caused by a variety of events including but not limited to seasonal changes or severe weather. To determine and distinguish between short-term, temporary increases, and long-term exposure, please, review the long-term trend charts on your app and read the long-term average provided in the app.

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