Rhode Island Radon Levels
2Zone 1 (High)
2Zone 2 (Moderate)
1Zone 3 (Low)
40% of counties in Rhode Island 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 |
|---|---|---|
| Bristol County | Zone 3 | Lowest Potential |
| Kent County | Zone 1 | Highest Potential |
| Newport County | Zone 2 | Moderate Potential |
| Providence County | Zone 2 | Moderate Potential |
| Washington County | Zone 1 | Highest Potential |
Rhode Island Radon Resources
Find certified radon testers, free or discounted test kits, and mitigation professionals through your state radon program.
Find Testers in Rhode Island →