Radon by ZIP

Radon zones in Alabama

Last updated

EPA’s Map of Radon Zones places 67 Alabama counties in its three radon potential zones: 13 in Zone 1 (highest), 33 in Zone 2 (moderate), and 21 in Zone 3 (low).

13Zone 1 · Highest potential
33Zone 2 · Moderate potential
21Zone 3 · Low potential

What this means for Alabama homes

Most Alabama counties fall in Zone 2. EPA predicts moderate average indoor levels (2 to 4 pCi/L) across much of Alabama. Many homes will be below the action level, but many will not, and only a test can tell which.

EPA’s guidance is the same everywhere: test your home, fix it if the level is 4 pCi/L or higher, and consider fixing between 2 and 4 pCi/L. The zone map is from 1993 and should not be used to decide whether a single home needs testing.

Alabama radon program

EPA lists the following state contact for Alabama: Alabama Department of Public Health Radiation Control, phone 334-290-6244. Website: www.alabamapublichealth.gov/radon/index.html. State programs can tell you about local testing data, free or discounted test kits, disclosure rules for home sales, and credentialed radon professionals.

Alabama counties and their EPA radon zones

CountyEPA radon zone
Autauga CountyZone 2
Baldwin CountyZone 3
Barbour CountyZone 2
Bibb CountyZone 2
Blount CountyZone 2
Bullock CountyZone 2
Butler CountyZone 3
Calhoun CountyZone 1
Chambers CountyZone 3
Cherokee CountyZone 2
Chilton CountyZone 2
Choctaw CountyZone 3
Clarke CountyZone 3
Clay CountyZone 1
Cleburne CountyZone 1
Coffee CountyZone 3
Colbert CountyZone 1
Conecuh CountyZone 3
Coosa CountyZone 1
Covington CountyZone 3
Crenshaw CountyZone 3
Cullman CountyZone 2
Dale CountyZone 3
Dallas CountyZone 2
DeKalb CountyZone 2
Elmore CountyZone 2
Escambia CountyZone 3
Etowah CountyZone 2
Fayette CountyZone 2
Franklin CountyZone 1
Geneva CountyZone 3
Greene CountyZone 2
Hale CountyZone 2
Henry CountyZone 3
Houston CountyZone 3
Jackson CountyZone 1
Jefferson CountyZone 2
Lamar CountyZone 2
Lauderdale CountyZone 1
Lawrence CountyZone 1
Lee CountyZone 2
Limestone CountyZone 1
Lowndes CountyZone 2
Macon CountyZone 2
Madison CountyZone 1
Marengo CountyZone 3
Marion CountyZone 2
Marshall CountyZone 2
Mobile CountyZone 3
Monroe CountyZone 3
Montgomery CountyZone 2
Morgan CountyZone 1
Perry CountyZone 2
Pickens CountyZone 2
Pike CountyZone 3
Randolph CountyZone 2
Russell CountyZone 2
Shelby CountyZone 2
St. Clair CountyZone 2
Sumter CountyZone 2
Talladega CountyZone 1
Tallapoosa CountyZone 3
Tuscaloosa CountyZone 2
Walker CountyZone 2
Washington CountyZone 3
Wilcox CountyZone 3
Winston CountyZone 2

County names follow the 2020 Census. Zones from the EPA Map of Radon Zones (text version). Rows marked “zone of” use the zone EPA gave the predecessor or surrounding county.

Next steps: read how to test your home, check a result with the level calculator, or look up a single address by ZIP code.

Sources

  1. U.S. EPA, EPA Map of Radon Zones (text version)
  2. U.S. EPA, EPA Map of Radon Zones and Supplemental Information (state radon contacts)
  3. U.S. EPA, EPA Maps of Radon Zones and Supporting Documents by State