Saint Johnsbury, VT Radon Mitigation and Testing

Q: What EPA Radon Zone is Saint Johnsbury in?

Saint Johnsbury is in Caledonia County, EPA Zone 2.

Q: How much does radon mitigation cost in Saint Johnsbury?

Radon mitigation typically costs between $800 and $2,000. Most standard systems fall in the $1,000-$1,500 range.

Caledonia County

EPA Zone 2

Saint Johnsbury, VT resides 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. Testing is recommended for all homes in the 05819 zip code area.

Saint Johnsbury, VT Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

Saint Johnsbury, VT Radon Testing

Finding qualified radon testing professionals is the first step toward protecting your home.

Saint Johnsbury Radon Facts

Key details about the radon risk profile for Saint Johnsbury and the 05819 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Caledonia County, VT

Zip Code

05819

Predicted Screening Level

2–4 pCi/L (Zone 2)

Saint Johnsbury and the 05819 zip code are located in Caledonia County, which has an EPA assigned Radon Zone of 2. A radon zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

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 with the most user-submitted radon test data in the state.

City	Avg User Radon Level	Submissions
Stowe	13.00 pCi/L	2
Wilmington	8.50 pCi/L	2