State Map
State
California
California Radon Program
Contact: Dale Parks
Email: dale.parks@cdph.ca.gov
Phone: (916) 716-3697
Website: California Indoor Radon Program
Translate Site
What is Radon?
Radon is a colorless, odorless, tasteless, and chemically inert radioactive gas. It is formed by the natural radioactive decay of uranium in rock, soil, and water. It can be found in all 50 states. Testing for it is the only way of telling how much is present.
Call Us
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National Radon Hotline: Purchase radon test kits by phone.
1 (800) SOS-RADON (767-7236)
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National Radon Helpline: Get live help for your radon questions.
1 (800) 55-RADON (557-2366)
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National Radon Fix-It Line: For general information on fixing or reducing the radon level in your home.
1 (800) 644-6999
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Living Healthy and Green Hotline
1 (866) 730-4733
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National Radon Hotline En Español
1 (866) 528-3187
