Arkansas Radon Levels
0Zone 1 (High)
14Zone 2 (Moderate)
61Zone 3 (Low)
No counties in Arkansas are classified as Zone 1 (highest risk), but 14 counties are Zone 2 (moderate potential). The EPA recommends testing all homes regardless of zone classification, as elevated radon can occur in any zone.
| County | EPA Zone | Risk Level |
|---|---|---|
| Arkansas County | Zone 3 | Lowest Potential |
| Ashley County | Zone 3 | Lowest Potential |
| Baxter County | Zone 2 | Moderate Potential |
| Benton County | Zone 2 | Moderate Potential |
| Boone County | Zone 2 | Moderate Potential |
| Bradley County | Zone 3 | Lowest Potential |
| Calhoun County | Zone 3 | Lowest Potential |
| Carroll County | Zone 2 | Moderate Potential |
| Chicot County | Zone 3 | Lowest Potential |
| Clark County | Zone 3 | Lowest Potential |
| Clay County | Zone 3 | Lowest Potential |
| Cleburne County | Zone 3 | Lowest Potential |
| Cleveland County | Zone 3 | Lowest Potential |
| Columbia County | Zone 3 | Lowest Potential |
| Conway County | Zone 3 | Lowest Potential |
| Craighead County | Zone 3 | Lowest Potential |
| Crawford County | Zone 3 | Lowest Potential |
| Crittenden County | Zone 3 | Lowest Potential |
| Cross County | Zone 3 | Lowest Potential |
| Dallas County | Zone 3 | Lowest Potential |
| Desha County | Zone 3 | Lowest Potential |
| Drew County | Zone 3 | Lowest Potential |
| Faulkner County | Zone 3 | Lowest Potential |
| Franklin County | Zone 3 | Lowest Potential |
| Fulton County | Zone 2 | Moderate Potential |
| Garland County | Zone 2 | Moderate Potential |
| Grant County | Zone 3 | Lowest Potential |
| Greene County | Zone 3 | Lowest Potential |
| Hempstead County | Zone 3 | Lowest Potential |
| Hot Spring County | Zone 3 | Lowest Potential |
| Howard County | Zone 3 | Lowest Potential |
| Independence County | Zone 2 | Moderate Potential |
| Izard County | Zone 2 | Moderate Potential |
| Jackson County | Zone 3 | Lowest Potential |
| Jefferson County | Zone 3 | Lowest Potential |
| Johnson County | Zone 3 | Lowest Potential |
| Lafayette County | Zone 3 | Lowest Potential |
| Lawrence County | Zone 3 | Lowest Potential |
| Lee County | Zone 3 | Lowest Potential |
| Lincoln County | Zone 3 | Lowest Potential |
| Little River County | Zone 3 | Lowest Potential |
| Logan County | Zone 3 | Lowest Potential |
| Lonoke County | Zone 3 | Lowest Potential |
| Madison County | Zone 3 | Lowest Potential |
| Marion County | Zone 2 | Moderate Potential |
| Miller County | Zone 3 | Lowest Potential |
| Mississippi County | Zone 3 | Lowest Potential |
| Monroe County | Zone 3 | Lowest Potential |
| Montgomery County | Zone 2 | Moderate Potential |
| Nevada County | Zone 3 | Lowest Potential |
| Newton County | Zone 3 | Lowest Potential |
| Ouachita County | Zone 3 | Lowest Potential |
| Perry County | Zone 3 | Lowest Potential |
| Phillips County | Zone 3 | Lowest Potential |
| Pike County | Zone 3 | Lowest Potential |
| Poinsett County | Zone 3 | Lowest Potential |
| Polk County | Zone 3 | Lowest Potential |
| Pope County | Zone 3 | Lowest Potential |
| Prairie County | Zone 3 | Lowest Potential |
| Pulaski County | Zone 3 | Lowest Potential |
| Randolph County | Zone 2 | Moderate Potential |
| St. Francis County | Zone 3 | Lowest Potential |
| Saline County | Zone 3 | Lowest Potential |
| Scott County | Zone 3 | Lowest Potential |
| Searcy County | Zone 2 | Moderate Potential |
| Sebastian County | Zone 3 | Lowest Potential |
| Sevier County | Zone 3 | Lowest Potential |
| Sharp County | Zone 2 | Moderate Potential |
| Stone County | Zone 2 | Moderate Potential |
| Union County | Zone 3 | Lowest Potential |
| Van Buren County | Zone 3 | Lowest Potential |
| Washington County | Zone 3 | Lowest Potential |
| White County | Zone 3 | Lowest Potential |
| Woodruff County | Zone 3 | Lowest Potential |
| Yell County | Zone 3 | Lowest Potential |