South Hero, VT Radon Mitigation and Testing

Q: What is the average radon level in South Hero, VT?

Based on 1 user-submitted tests, the average radon level is 5.00 pCi/L.

Q: What EPA Radon Zone is South Hero in?

South Hero is in Grand Isle County, EPA Zone 3.

Q: How much does radon mitigation cost in South Hero?

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

Avg: 5.00 pCi/L

Grand Isle County

EPA Zone 3

1 user test

Nestled on an island in Lake Champlain, South Hero sits in Grand Isle County within the Burlington Metro area (zip code 05486). The island's unique geology, with lacustrine soils over Ordovician bedrock, creates variable radon conditions that differ from mainland Vermont. While testing data remains limited for this lakeside community, homeowners should conduct radon testing to establish baseline readings for their properties.

5.00

pCi/L average

Above EPA Action Level

Based on 1 user-submitted radon test for homes in South Hero, VT. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

South Hero, VT Radon Mitigation

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

South Hero, VT Radon Testing

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

South Hero Radon Facts

Key details about the radon risk profile for South Hero and the 05486 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Grand Isle County, VT

Zip Code

05486

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Avg. User Submitted Level

5.00 pCi/L

User Tests Submitted

South Hero and the 05486 zip code are located in Grand Isle County, which has an EPA assigned Radon Zone of 3. A radon zone of 3 predicts an average indoor radon screening level less than 2 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for South Hero, VT

What is the average radon level in South Hero, VT?

Based on 1 user-submitted test, the average radon level in South Hero is 5.00 pCi/L. This exceeds the EPA's recommended action level of 4.0 pCi/L, and radon testing is recommended for all homes in the area.

What EPA Radon Zone is South Hero in?

South Hero and the 05486 zip code are in Grand Isle County, which has an EPA assigned Radon Zone of 3. A zone of 3 predicts an average indoor radon screening level less than 2 pCi/L.

How much does radon mitigation cost in South Hero?

Radon mitigation in South Hero 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 South Hero?

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