EPA radon zones
Alabama radon map: every county's zone
13 of Alabama's 67 counties are EPA radon zone 1 (predicted average above 4 pCi/L), 33 are zone 2 and 21 are zone 3. High readings occur in every zone, so EPA recommends testing every home.
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
How much does radon mitigation cost?
Most single-family systems cost $800 to $2,500 installed, depending on foundation type and how many suction points are needed. A follow-up test confirms the system works.
What do the zones mean?
EPA radon zones describe counties, not houses. Zone 1 counties have a predicted average indoor level above 4 picocuries per liter (pCi/L), Zone 2 between 2 and 4, Zone 3 below 2. Homes with high levels are found in every zone, which is why EPA recommends that every home be tested, and fixed at 4 pCi/L or above.
Alabama cities: water and radon
Source: EPA Map of Radon Zones.