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Montana legistlation

DEQ Urges Homeowners to Test for Radon

January is Radon Awareness Month, and the Montana Department of Environmental Quality (DEQ) is urging Montanans to protect their health by testing their homes for radon gas.

Radon is an invisible, odorless gas that occurs naturally from the decay of uranium and radium in many Montana soils and can accumulate inside homes. Studies indicate elevated levels of the gas are the second leading cause of lung cancer overall. Nationally, more than 22,000 people each year die from lung cancer linked to exposure to radon.

In Montana, historic radon testing shows that radon gas is present in varying levels in homes throughout the state. The amount of radon depends largely on the underlying geology of the area. Radon is measured in picocuries per liter (pCi/L). The Environmental Protection Agency (EPA) identifies 4.0 pCi/L as the "action level" for radon.