Radon Levels in Vermont
Vermont is classified as an EPA Zone 1 state with a high risk for radon. Average indoor radon levels range from 2 to 6 pCi/L, and approximately 30% of Vermont homes test above the EPA action level of 4.0 pCi/L.
Vermont Radon Summary
High Radon Risk State
Vermont is among the higher-risk states for residential radon. The Vermont Department of Health strongly recommends that all residents test their homes. If you have not tested your home, consider ordering a test kit or radon detector today.
Key Facts About Radon in Vermont
- Vermont's granite Green Mountains are a significant radon source
- Vermont has one of the highest rates of testing in New England
- Older stone-and-mortar foundation homes are at particular risk
- Vermont DEC provides comprehensive radon guidance
Vermont Testing Requirements & Recommendations
Vermont requires radon disclosure in real estate transactions. Testing strongly recommended.
Vermont radon contractors specialize in the unique challenges of New England stone foundations.
Major Cities in Vermont
Radon levels can vary significantly within Vermont 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 Vermont 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 Vermont. 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.
Some links are affiliate links. Learn more.
