Sussex, WI Radon Mitigation and Testing

Q: What EPA Radon Zone is Sussex in?

Sussex is in Waukesha County, EPA Zone 1.

Q: How much does radon mitigation cost in Sussex?

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

Waukesha County

EPA Zone 1

Part of the Milwaukee Metro area, Sussex sits in Waukesha County where glacial deposits over dolomite bedrock create EPA Zone 1 radon conditions. While local testing data remains limited, the community's predominantly suburban housing stock from the 1960s-90s typically features full basements where radon can accumulate. Wisconsin's geology makes testing essential for all residents, regardless of home age or construction type.

Sussex, WI Radon Mitigation

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

Sussex, WI Radon Testing

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

Sussex Radon Facts

Key details about the radon risk profile for Sussex and the 53089 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Waukesha County, WI

Zip Code

53089

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Sussex and the 53089 zip code are located in Waukesha 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 Sussex, WI

What EPA Radon Zone is Sussex in?

Sussex and the 53089 zip code are in Waukesha 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 Sussex?

Radon mitigation in Sussex 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 Sussex?

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