Saint Johnsbury, VT Radon Levels
Check local Saint Johnsbury radon levels and find certified testing and mitigation professionals to keep your home safe
Saint Johnsbury, VT Radon Facts
EPA Radon Zone
Zone 2 — Moderate Risk
2–4 pCi/L (Zone 2)
County
Caledonia County, VT
Zip Code
05819
Nestled in Vermont's Northeast Kingdom within Caledonia County, Saint Johnsbury sits in EPA Zone 2 with moderate radon potential across the 05819 zip code area. Testing data remains limited for this historic community along the Connecticut River valley. Vermont's granite bedrock and glacial till deposits create geological conditions that can support radon gas production, and the area's older New England homes with stone foundations and basements may experience higher radon entry rates.
Saint Johnsbury, VT Radon Mitigation
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Radon FAQ for Saint Johnsbury, VT
What EPA Radon Zone is Saint Johnsbury in?
Saint Johnsbury and the 05819 zip code are in Caledonia County, which has an EPA assigned Radon Zone of 2. A zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L.
How much does radon mitigation cost in Saint Johnsbury?
Radon mitigation in Saint Johnsbury typically costs between $800 and $2,000. Most homes with standard basements can be mitigated with a sub-slab depressurization system in the $1,000–$1,500 range. Factors that can increase cost include complex foundations, crawl spaces, or very high radon levels.
Should I test for radon if I'm buying a home in Saint Johnsbury?
Yes. Radon testing should be part of every home purchase. A short-term radon test is typically included as part of the home inspection process and costs $150–$250. If elevated levels are found, you can negotiate mitigation as part of the sale.
Most Active Radon Markets in Vermont
Cities in Vermont with the most user-submitted radon test data, ranked by number of submissions.
| City | Avg User Radon Level | Submissions |
|---|---|---|
| Stowe | 13.00 pCi/L | 2 |
| Wilmington | 8.50 pCi/L | 2 |