Radon Levels in Rhode Island
Rhode Island is classified as an EPA Zone 2 state with a moderate risk for radon. Average indoor radon levels range from 1.5 to 4.5 pCi/L, and approximately 16% of Rhode Island homes test above the EPA action level of 4.0 pCi/L.
Rhode Island Radon Summary
Key Facts About Radon in Rhode Island
- Rhode Island's granite bedrock contributes moderate radon levels
- Older New England housing stock can have significant radon entry points
- RIDEM provides radon testing resources
Rhode Island Testing Requirements & Recommendations
Rhode Island requires radon disclosure in real estate. Testing recommended for all homes.
Standard New England mitigation methods are effective in Rhode Island.
Major Cities in Rhode Island
Radon levels can vary significantly within Rhode Island depending on local geology. All residents — regardless of city — should test their specific home, as neighborhood-level radon varies independently of broader state and county averages.
What Should Rhode Island Residents Do?
Test Your Home
Use a short-term charcoal test kit ($15–$25) for an initial reading, or a continuous radon detector for ongoing monitoring. Test in your basement or lowest livable area.
Understand Your Result
If your result is below 2.0 pCi/L: monitor periodically. Between 2.0–4.0 pCi/L: consider mitigation. Above 4.0 pCi/L: the EPA recommends mitigation. Above 8.0 pCi/L: take action promptly.
Hire a Certified Contractor if Needed
Look for NRPP or NRSB-certified radon mitigation contractors in Rhode Island. Mitigation systems typically cost $800–$2,500 and can reduce radon levels by 50–99%.
Verify with a Follow-Up Test
After mitigation, test again to confirm the system is working. Retest every 2 years, or after significant home renovations.
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