Radon

  • Test your nest for radon

    Radon is invisible - you can't see or smell it, but it can be deadly. Take action against the second leading cause of lung cancer. Test your home today!
     

    Find a radon test kit

Radon is a naturally occurring radioactive gas that can cause lung cancer.

You can’t see or smell radon. Testing is the only way to know your level of exposure. Radon can have a big impact on your health and indoor air quality.  All homes should be tested for radon.

  • Radon Risks and Solutions​

    Radon Saving Lives with Doctor and Lungs

    Learn how you can reduce your risk and exposure to radon.​

    Protect your family​

  • National Radon Action Plan

    Family indoors with four children on the couch

    Read about the national multisector strategies to prevent exposure to radon.

    Help advance NRAP goals

  • Standards of Practice

    Laptop with stack of books on top of table in the library referencing standards development.

    Review technical standards for radon professionals. 

    Learn about current standards​

  • Frequently Asked Questions​

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    Search most common questions or send a question to our customer care team.​

    Find answers

  • State and Tribal Indoor Radon Grants​

    Map of SIRG Grantees

    Access resources on the EPA’s State and Tribal Indoor Radon Grants (SIRG) program.​

    Review SIRG resources​

  • Radon Outreach and Media​

    Test your nest for radon; Fix your nest, if needed; Save a life!

    Stay informed and help communicate strategies to reduce radon risk.​

    Discover radon resources​
Map of the US with EPA regions.

EPA Regional and State Contacts

Find out which radon zone you live in and connect with Regional, State and Tribal Radon Programs for more local information.​

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Stay Informed!

Subscribe to Radon and Indoor Air Quality email updates.

Contact Us about Radon to ask a question, provide feedback, or report a problem.
Last updated on July 22, 2025