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This is not the current EPA website. To navigate to the current EPA website, please go to 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 This website is no longer updated and links to external websites and some internal pages may not work.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 »



RadTown is the EPA’s radiation education website. The four areas below contain fact sheets that explain different types, sources, and uses of radioactive material or radiation. Each of the location-based categories below will lead you to in-depth fact sheets, like our Non-Ionizing Radiation Used in Microwave Ovens fact sheet. In addition, the terms listed on our A to Z Index  will also take you to fact sheets about those topics.

Spotlight on...

This is a picture of a dalmatian dog, who lives at the Emergency Response Building in the Downtown section of RadTown. Visit the Downtown section to learn more!RadTown has an exciting new look! All of the great content you know and love is still contained on this site. Learn something new with one of our fact sheets.

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This is an image of the three actions to take during a radiological emergency.