Sister Bay, WI Radon Mitigation and Testing

Q: What EPA Radon Zone is Sister Bay in?

Sister Bay is in Door County, EPA Zone 1.

Q: How much does radon mitigation cost in Sister Bay?

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

Door County

EPA Zone 1

Positioned along Lake Michigan in Door County, Sister Bay's 54234 zip code lacks sufficient radon testing data for assessment. The area's dolomite bedrock beneath glacial soils can create pockets of elevated radon, particularly in homes with basements or lower-level living spaces. Door County residents should conduct individual testing regardless of their proximity to the lake.

Sister Bay, WI Radon Mitigation

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

Sister Bay, WI Radon Testing

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

Sister Bay Radon Facts

Key details about the radon risk profile for Sister Bay and the 54234 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Door County, WI

Zip Code

54234

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Sister Bay and the 54234 zip code are located in Door County, which has an EPA assigned Radon Zone of 1. A radon zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Sister Bay, WI

What EPA Radon Zone is Sister Bay in?

Sister Bay and the 54234 zip code are in Door County, which has an EPA assigned Radon Zone of 1. A zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L.

How much does radon mitigation cost in Sister Bay?

Radon mitigation in Sister Bay 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 Sister Bay?

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