South Milwaukee, WI Radon Levels

Q: What EPA Radon Zone is South Milwaukee in?

South Milwaukee is in Milwaukee County, EPA Zone 2.

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

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

Check local South Milwaukee radon levels and find certified testing and mitigation professionals to keep your home safe

South Milwaukee, WI Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)

County Milwaukee County, WI

Zip Code 53172

Positioned along Lake Michigan in Milwaukee County within the Milwaukee Metro area (zip code 53172), South Milwaukee sits on glacial deposits that can contribute to radon gas production in southeastern Wisconsin. The community's housing stock includes both historic lakeside homes and mid-century residential developments, many featuring full basements typical of the region. Testing data remains limited, making radon testing essential for homeowners to understand their property's radon risk.

8.71

pCi/L area average

Above EPA Action Level

Milwaukee County average: 8.71 pCi/L, based on 7 user-submitted tests across 4 cities in the county. No homeowner readings have been submitted for South Milwaukee itself yet, so this county figure is the closest available benchmark. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

South Milwaukee, WI Radon Mitigation

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

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Radon Readings Near South Milwaukee, WI

No homeowner tests have been submitted for South Milwaukee yet. The closest cities with user-submitted radon data are shown below — explore them to gauge local conditions. Radon varies by home, so testing is the only way to know your level.

City	Distance	Avg User Level	Readings
Oak Creek	2.4 mi	8.33 pCi/L	3
Franklin	7.3 mi	6.00 pCi/L	1
Milwaukee	11.2 mi	10.00 pCi/L	3
Racine	12.5 mi	8.00 pCi/L	1
Waterford	19.7 mi	9.00 pCi/L	2
Waukesha	20.8 mi	5.50 pCi/L	2
Menomonee Falls	21.3 mi	6.50 pCi/L	2
Thiensville	23.3 mi	5.00 pCi/L	1

Milwaukee County Radon Profile

Milwaukee County is mapped as EPA Radon Zone 2, where the local geology is predicted to produce moderate indoor screening levels between 2 and 4 pCi/L. Homeowner-submitted tests from 4 cities in Milwaukee County average 8.71 pCi/L across 7 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. Radon is the second leading cause of lung cancer in the United States, and a short-term test is the only way to confirm a specific home's level in Milwaukee County.

Radon FAQ for South Milwaukee, WI

What EPA Radon Zone is South Milwaukee in?

South Milwaukee and the 53172 zip code are in Milwaukee 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.

Why are radon readings shown from areas near South Milwaukee?

No homeowner radon tests have been submitted for South Milwaukee yet. Because radon is driven by regional soil and bedrock geology, readings from the closest cities—and the Milwaukee County average—are the best available indicator of local conditions until South Milwaukee homeowners submit their own results. The EPA still recommends testing every individual home, since levels can vary significantly from house to house.

How much does radon mitigation cost in South Milwaukee?

Radon mitigation in South Milwaukee 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 Milwaukee?

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.