EPA Zone Data 2026
Alabama Radon Map, Levels & Testing Guide
View EPA radon zone classifications for every county in Alabama. Open your county to compare basement test meaning, EPA action thresholds, and when mitigation pricing becomes worth checking.
13
Zone 1
High Risk
High Risk
33
Zone 2
Moderate
Moderate
21
Zone 3
Low Risk
Low Risk
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Browse Counties
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Open your county to see its EPA zone, testing meaning, and the point where mitigation becomes worth pricing.
Autauga County
Zone 2
Barbour County
Zone 2
Bibb County
Zone 2
Blount County
Zone 2
Bullock County
Zone 2
Calhoun County
Zone 1
Cherokee County
Zone 2
Chilton County
Zone 2
Clay County
Zone 1
Cleburne County
Zone 1
Colbert County
Zone 1
Coosa County
Zone 1
Cullman County
Zone 2
Dallas County
Zone 2
DeKalb County
Zone 2
Elmore County
Zone 2
Etowah County
Zone 2
Fayette County
Zone 2
Franklin County
Zone 1
Greene County
Zone 2
Hale County
Zone 2
Jackson County
Zone 1
Jefferson County
Zone 2
Lamar County
Zone 2
Lauderdale County
Zone 1
Lawrence County
Zone 1
Lee County
Zone 2
Limestone County
Zone 1
Lowndes County
Zone 2
Macon County
Zone 2
Madison County
Zone 1
Marion County
Zone 2
Marshall County
Zone 2
Montgomery County
Zone 2
Morgan County
Zone 1
Perry County
Zone 2
Pickens County
Zone 2
Randolph County
Zone 2
Russell County
Zone 2
Shelby County
Zone 2
St. Clair County
Zone 2
Sumter County
Zone 2
Talladega County
Zone 1
Tuscaloosa County
Zone 2
Walker County
Zone 2
Winston County
Zone 2
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