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January is National Radon Action Month and the cold winter months are the best time to test for this odorless and colorless gas. CDPH is offering free test kits to households in California throughout the month of January, or until supplies run out.

Radon, a naturally occurring gas, is the second leading cause of lung cancer in the United States, according to the Center for Chronic Disease Prevention and Health Promotion for Disease Control and Prevention (CDC).

“Testing for radon in your home is a simple process,” said CDPH Director and State Public Health Officer Dr. Karen Smith. “Taking steps for remediation, if needed, can be critical for indoor air quality, and improving the safety of your home.”

The kits are provided by the U.S. Environmental Protection Agency’s State Indoor Radon Grant fund, and are limited to one free test kit per household. The aggregated information from the test results will be used to update statewide Radon Potential Maps, which show the likelihood of radon in a specific region

Radon has been found in every county of the State. Radon Potential Maps are used to speculate where high levels of radon might be found. These maps WILL NOT tell you how much radon is in your home or any other location. The ONLY way to know if radon is present is to test.  

Radon testing is recommended for all Mono County homes, including those of Mono County employees.