Radon Blog

November 07, 2018

Radon can be found in any US State, even in Arizona

Radon has been found in every state included in Arizona

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.


Arizona and Radon Gas

Radon presence in Arizona is similar to the national average.

A state indoor radon sampling survey conducted in 1987-89 by the Arizona Radiation Regulatory Agency suggest that about 1 out of 15 Arizona homes may contain radon concentrations in excess of the EPA recommended action level of 4.0 picocuries per liter of air (4.0pCi/L).  

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