Radon Zones

This US EPA map of radon zones in Ohio shows that most of Ohio is located in Zone 1 which has the highest potential for radon. The rest of Ohio is in Zone 2, which has the next highest potential. Instructions about the files. What do the colors mean?

EPA Ohio Radon Map

US EPA Disclaimer: “The purpose of this map is to assist National, State, and local organizations to target their resources and to implement radon-resistant building codes. This map is not intended to be used to determine if a home in a given zone should be tested for radon. Homes with elevated levels of radon have been found in all three zones. All homes should be tested regardless of geographic location.”

Radon Prevalence in Your Area

To learn more about the prevalence of radon in your county, see the Ohio Radon Information website. The site has radon profiles on every county in Ohio. Another source of local data is the University of Toledo’s Ohio Radon Information System. The site provides detailed statistics and maps, including zip code level data. Information is also available on radon concentrations in public water supplies and private water wells.

Disclaimer: The information contained on this site is provided for informational purposes only, and should not be construed as professional or expert advice. No recipients of content from this site should act or refrain from acting on the basis of any content included in the site without seeking the appropriate professional or expert advice.
Disclaimer: The information contained on this site is provided for informational purposes only, and should not be construed as professional or expert advice. No recipients of content from this site should act or refrain from acting on the basis of any content included in the site without seeking the appropriate professional or expert advice.