Georgia Radon Levels
4Zone 1 (High)
55Zone 2 (Moderate)
100Zone 3 (Low)
3% of counties in Georgia are classified as EPA Zone 1 (highest radon potential), meaning predicted average indoor radon levels exceed 4 pCi/L — the EPA action level. The EPA recommends that all homes be tested for radon, regardless of zone classification.
| County | EPA Zone | Risk Level |
|---|---|---|
| Appling County | Zone 3 | Lowest Potential |
| Atkinson County | Zone 3 | Lowest Potential |
| Bacon County | Zone 3 | Lowest Potential |
| Baker County | Zone 3 | Lowest Potential |
| Baldwin County | Zone 3 | Lowest Potential |
| Banks County | Zone 2 | Moderate Potential |
| Barrow County | Zone 2 | Moderate Potential |
| Bartow County | Zone 2 | Moderate Potential |
| Ben Hill County | Zone 3 | Lowest Potential |
| Berrien County | Zone 3 | Lowest Potential |
| Bibb County | Zone 3 | Lowest Potential |
| Bleckley County | Zone 3 | Lowest Potential |
| Brantley County | Zone 3 | Lowest Potential |
| Brooks County | Zone 3 | Lowest Potential |
| Bryan County | Zone 3 | Lowest Potential |
| Bulloch County | Zone 3 | Lowest Potential |
| Burke County | Zone 3 | Lowest Potential |
| Butts County | Zone 2 | Moderate Potential |
| Calhoun County | Zone 3 | Lowest Potential |
| Camden County | Zone 3 | Lowest Potential |
| Candler County | Zone 3 | Lowest Potential |
| Carroll County | Zone 2 | Moderate Potential |
| Catoosa County | Zone 2 | Moderate Potential |
| Charlton County | Zone 3 | Lowest Potential |
| Chatham County | Zone 3 | Lowest Potential |
| Chattahoochee County | Zone 3 | Lowest Potential |
| Chattooga County | Zone 3 | Lowest Potential |
| Cherokee County | Zone 2 | Moderate Potential |
| Clarke County | Zone 2 | Moderate Potential |
| Clay County | Zone 3 | Lowest Potential |
| Clayton County | Zone 2 | Moderate Potential |
| Clinch County | Zone 3 | Lowest Potential |
| Cobb County | Zone 1 | Highest Potential |
| Coffee County | Zone 3 | Lowest Potential |
| Colquitt County | Zone 3 | Lowest Potential |
| Columbia County | Zone 3 | Lowest Potential |
| Cook County | Zone 3 | Lowest Potential |
| Coweta County | Zone 2 | Moderate Potential |
| Crawford County | Zone 3 | Lowest Potential |
| Crisp County | Zone 3 | Lowest Potential |
| Dade County | Zone 3 | Lowest Potential |
| Dawson County | Zone 2 | Moderate Potential |
| Decatur County | Zone 3 | Lowest Potential |
| DeKalb County | Zone 1 | Highest Potential |
| Dodge County | Zone 3 | Lowest Potential |
| Dooly County | Zone 3 | Lowest Potential |
| Dougherty County | Zone 3 | Lowest Potential |
| Douglas County | Zone 2 | Moderate Potential |
| Early County | Zone 3 | Lowest Potential |
| Echols County | Zone 3 | Lowest Potential |
| Effingham County | Zone 3 | Lowest Potential |
| Elbert County | Zone 2 | Moderate Potential |
| Emanuel County | Zone 3 | Lowest Potential |
| Evans County | Zone 3 | Lowest Potential |
| Fannin County | Zone 2 | Moderate Potential |
| Fayette County | Zone 2 | Moderate Potential |
| Floyd County | Zone 2 | Moderate Potential |
| Forsyth County | Zone 2 | Moderate Potential |
| Franklin County | Zone 2 | Moderate Potential |
| Fulton County | Zone 1 | Highest Potential |
| Gilmer County | Zone 2 | Moderate Potential |
| Glascock County | Zone 3 | Lowest Potential |
| Glynn County | Zone 3 | Lowest Potential |
| Gordon County | Zone 3 | Lowest Potential |
| Grady County | Zone 3 | Lowest Potential |
| Greene County | Zone 2 | Moderate Potential |
| Gwinnett County | Zone 1 | Highest Potential |
| Habersham County | Zone 2 | Moderate Potential |
| Hall County | Zone 2 | Moderate Potential |
| Hancock County | Zone 3 | Lowest Potential |
| Haralson County | Zone 2 | Moderate Potential |
| Harris County | Zone 2 | Moderate Potential |
| Hart County | Zone 2 | Moderate Potential |
| Heard County | Zone 2 | Moderate Potential |
| Henry County | Zone 2 | Moderate Potential |
| Houston County | Zone 3 | Lowest Potential |
| Irwin County | Zone 3 | Lowest Potential |
| Jackson County | Zone 2 | Moderate Potential |
| Jasper County | Zone 2 | Moderate Potential |
| Jeff Davis County | Zone 3 | Lowest Potential |
| Jefferson County | Zone 3 | Lowest Potential |
| Jenkins County | Zone 3 | Lowest Potential |
| Johnson County | Zone 3 | Lowest Potential |
| Jones County | Zone 3 | Lowest Potential |
| Lamar County | Zone 2 | Moderate Potential |
| Lanier County | Zone 3 | Lowest Potential |
| Laurens County | Zone 3 | Lowest Potential |
| Lee County | Zone 3 | Lowest Potential |
| Liberty County | Zone 3 | Lowest Potential |
| Lincoln County | Zone 3 | Lowest Potential |
| Long County | Zone 3 | Lowest Potential |
| Lowndes County | Zone 3 | Lowest Potential |
| Lumpkin County | Zone 2 | Moderate Potential |
| McDuffie County | Zone 3 | Lowest Potential |
| McIntosh County | Zone 3 | Lowest Potential |
| Macon County | Zone 3 | Lowest Potential |
| Madison County | Zone 2 | Moderate Potential |
| Marion County | Zone 3 | Lowest Potential |
| Meriwether County | Zone 2 | Moderate Potential |
| Miller County | Zone 3 | Lowest Potential |
| Mitchell County | Zone 3 | Lowest Potential |
| Monroe County | Zone 2 | Moderate Potential |
| Montgomery County | Zone 3 | Lowest Potential |
| Morgan County | Zone 2 | Moderate Potential |
| Murray County | Zone 3 | Lowest Potential |
| Muscogee County | Zone 3 | Lowest Potential |
| Newton County | Zone 2 | Moderate Potential |
| Oconee County | Zone 2 | Moderate Potential |
| Oglethorpe County | Zone 2 | Moderate Potential |
| Paulding County | Zone 2 | Moderate Potential |
| Peach County | Zone 3 | Lowest Potential |
| Pickens County | Zone 2 | Moderate Potential |
| Pierce County | Zone 3 | Lowest Potential |
| Pike County | Zone 2 | Moderate Potential |
| Polk County | Zone 3 | Lowest Potential |
| Pulaski County | Zone 3 | Lowest Potential |
| Putnam County | Zone 3 | Lowest Potential |
| Quitman County | Zone 3 | Lowest Potential |
| Rabun County | Zone 2 | Moderate Potential |
| Randolph County | Zone 3 | Lowest Potential |
| Richmond County | Zone 2 | Moderate Potential |
| Rockdale County | Zone 2 | Moderate Potential |
| Schley County | Zone 3 | Lowest Potential |
| Screven County | Zone 3 | Lowest Potential |
| Seminole County | Zone 3 | Lowest Potential |
| Spalding County | Zone 2 | Moderate Potential |
| Stephens County | Zone 2 | Moderate Potential |
| Stewart County | Zone 3 | Lowest Potential |
| Sumter County | Zone 3 | Lowest Potential |
| Talbot County | Zone 2 | Moderate Potential |
| Taliaferro County | Zone 3 | Lowest Potential |
| Tattnall County | Zone 3 | Lowest Potential |
| Taylor County | Zone 3 | Lowest Potential |
| Telfair County | Zone 3 | Lowest Potential |
| Terrell County | Zone 3 | Lowest Potential |
| Thomas County | Zone 3 | Lowest Potential |
| Tift County | Zone 3 | Lowest Potential |
| Toombs County | Zone 3 | Lowest Potential |
| Towns County | Zone 2 | Moderate Potential |
| Treutlen County | Zone 3 | Lowest Potential |
| Troup County | Zone 2 | Moderate Potential |
| Turner County | Zone 3 | Lowest Potential |
| Twiggs County | Zone 3 | Lowest Potential |
| Union County | Zone 2 | Moderate Potential |
| Upson County | Zone 2 | Moderate Potential |
| Walker County | Zone 2 | Moderate Potential |
| Walton County | Zone 2 | Moderate Potential |
| Ware County | Zone 3 | Lowest Potential |
| Warren County | Zone 3 | Lowest Potential |
| Washington County | Zone 3 | Lowest Potential |
| Wayne County | Zone 3 | Lowest Potential |
| Webster County | Zone 3 | Lowest Potential |
| Wheeler County | Zone 3 | Lowest Potential |
| White County | Zone 2 | Moderate Potential |
| Whitfield County | Zone 2 | Moderate Potential |
| Wilcox County | Zone 3 | Lowest Potential |
| Wilkes County | Zone 3 | Lowest Potential |
| Wilkinson County | Zone 3 | Lowest Potential |
| Worth County | Zone 3 | Lowest Potential |