Radon Hotlines (Toll-Free) EPA supports the following hotlines to best serve consumers with radon-related questions and concerns.

1-800-SOSRADON (1-800-767-7236)* Purchase radon test kits by phone.

1-800-55RADON (557-2366)* Get live help for your radon questions.

1-800-644-6999* Radon Fit-It Hotline. For general information on fixing or reducing the radon level in your home.

1-800-426-4791 Safe Drinking Water Hotline. For general information on drinking water, radon in water, testing and treatment, and standards for radon drinking water. Operated under a contract with EPA

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