Vermont Radon Levels
0Zone 1 (High)
12Zone 2 (Moderate)
2Zone 3 (Low)
No counties in Vermont are classified as Zone 1 (highest risk), but 12 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 |
|---|---|---|
| Addison County | Zone 2 | Moderate Potential |
| Bennington County | Zone 2 | Moderate Potential |
| Caledonia County | Zone 2 | Moderate Potential |
| Chittenden County | Zone 3 | Lowest Potential |
| Essex County | Zone 2 | Moderate Potential |
| Franklin County | Zone 2 | Moderate Potential |
| Grand Isle County | Zone 3 | Lowest Potential |
| Lamoille County | Zone 2 | Moderate Potential |
| Orange County | Zone 2 | Moderate Potential |
| Orleans County | Zone 2 | Moderate Potential |
| Rutland County | Zone 2 | Moderate Potential |
| Washington County | Zone 2 | Moderate Potential |
| Windham County | Zone 2 | Moderate Potential |
| Windsor County | Zone 2 | Moderate Potential |