An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to www.epa.gov. This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Radon

Basic Radon Facts

Información disponible en español

The below fact sheet, updated July 2016, contains basic radon facts, including:

  • radon in general
  • radon health risks
  • radon testing
  • fixing radon problems
You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.
  • Basic Radon Facts (PDF)(2 pp, 145 K, July 2016, EPA 402/F-16/002)
    General information, test for radon, how to get a test kit