Somerset, WI Radon Mitigation and Testing

Q: What is the average radon level in Somerset, WI?

Based on 1 user-submitted tests, the average radon level is 4.00 pCi/L.

Q: What EPA Radon Zone is Somerset in?

Somerset is in St Croix County, EPA Zone Unknown.

Q: How much does radon mitigation cost in Somerset?

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

Avg: 4.00 pCi/L

St Croix County

EPA Zone Unknown

1 user test

Somerset in St. Croix County shows an average radon level of 4.0 pCi/L based on current testing data, which sits right at the EPA action threshold. Located along the Minnesota border in the Minneapolis-St. Paul metro area, the community's glacial till soils and basement-equipped homes create conditions where radon can accumulate. Regular testing remains recommended even for homes at or below the EPA threshold.

4.00

pCi/L average

Above EPA Action Level

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

4.0 EPA

10+

Somerset, WI Radon Mitigation

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

Somerset, WI Radon Testing

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

Somerset, Wisconsin Radon Levels

User-submitted radon test readings from homes in the Somerset area.

Radon Level	City	Home Age	Foundation	Submitted
4 pCi/L	Somerset, WI	21-50 Years	Full Basement	Apr 2025

Have a radon test result for Somerset? Submit your reading to help other homeowners.

Somerset Radon Facts

Key details about the radon risk profile for Somerset and the 54025 zip code area.

EPA Radon Zone

Unknown

County

St Croix County, WI

Zip Code

54025

Predicted Screening Level

Unknown

Avg. User Submitted Level

4.00 pCi/L

User Tests Submitted

Somerset and the 54025 zip code are located in St Croix County, which has an EPA assigned Radon Zone of Unknown. A radon zone of Unknown does not have sufficient data for classification. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Somerset, WI

What is the average radon level in Somerset, WI?

Based on 1 user-submitted test, the average radon level in Somerset is 4.00 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 Somerset in?

Somerset and the 54025 zip code are in St Croix County, which has an EPA assigned Radon Zone of Unknown. A zone of Unknown does not have sufficient data for classification.

How much does radon mitigation cost in Somerset?

Radon mitigation in Somerset 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 Somerset?

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 Wisconsin

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

City	Avg User Radon Level	Submissions
Milwaukee	10.00 pCi/L	3
Prairie Du Chien	10.00 pCi/L	2
Stevens Point	5.50 pCi/L	2
Menomonie	10.00 pCi/L	1
Delavan	6.00 pCi/L	1
Shawano	No submissions	0
Sturgeon Bay	No submissions	0