Main menu
- FAQ – Got Radon? Get Answers!
- State Multi-Family Radon Measurement Requirements
- Testing
- Results: What do they mean?
- Radon in Real Estate
- Mitigation
- Radon Resistant New Construction (RRNC)
- Health Effects
- EPA Consumer Publications
- Radon in the Media
- Standards and Certifications
- State Radon Programs Information
- Research
- EPA Regional Stakeholder Meetings
- Radon in Schools
- Education Resources
- National Radon Poster Contest Archive 2007-2015
- Radon Organizations
- EPA Radon
- Contact Us
Main menu
- FAQ – Got Radon? Get Answers!
- State Multi-Family Radon Measurement Requirements
- Testing
- Results: What do they mean?
- Radon in Real Estate
- Mitigation
- Radon Resistant New Construction (RRNC)
- Health Effects
- EPA Consumer Publications
- Radon in the Media
- Standards and Certifications
- State Radon Programs Information
- Research
- EPA Regional Stakeholder Meetings
- Radon in Schools
- Education Resources
- National Radon Poster Contest Archive 2007-2015
- Radon Organizations
- EPA Radon
- Contact Us
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
