New Berlin, WI Radon Levels

Q: What EPA Radon Zone is New Berlin in?

New Berlin is in Waukesha County, EPA Zone 1.

Q: How much does radon mitigation cost in New Berlin?

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

Check local New Berlin radon levels and find certified testing and mitigation professionals to keep your home safe

New Berlin, WI Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)

County Waukesha County, WI

Zip Code 53146

Milwaukee Metro suburb New Berlin in Waukesha County spans zip codes 53146 and 53151, sitting where glacial deposits over dolomite bedrock create high radon potential. Although current testing data is insufficient for trend analysis, the area's EPA Zone 1 designation strongly indicates elevated radon risk. The community's predominantly post-1960s suburban homes with full basements provide ideal conditions for radon accumulation and warrant professional assessment.

6.80

pCi/L area average

Above EPA Action Level

Waukesha County average: 6.80 pCi/L, based on 5 user-submitted tests across 4 cities in the county. No homeowner readings have been submitted for New Berlin 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+

New Berlin, 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 New Berlin, WI

No homeowner tests have been submitted for New Berlin 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
Waukesha	7.0 mi	5.50 pCi/L	2
Franklin	7.9 mi	6.00 pCi/L	1
Milwaukee	9.5 mi	10.00 pCi/L	3
Pewaukee	10.2 mi	10.00 pCi/L	1
Menomonee Falls	12.6 mi	6.50 pCi/L	2
Oak Creek	12.8 mi	8.33 pCi/L	3
Waterford	15.3 mi	9.00 pCi/L	2
Thiensville	19.2 mi	5.00 pCi/L	1

Waukesha County Radon Profile

Waukesha County falls in EPA Radon Zone 1, meaning the local uranium-bearing geology is predicted to drive average indoor radon screening levels above the EPA's 4 pCi/L action threshold. Homeowner-submitted tests from 4 cities in Waukesha County average 6.80 pCi/L across 5 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. Since radon is the second leading cause of lung cancer nationally, the EPA urges every household in Waukesha County to test, as levels can differ between neighboring homes.

Radon FAQ for New Berlin, WI

What EPA Radon Zone is New Berlin in?

New Berlin and the 53146 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.

Why are radon readings shown from areas near New Berlin?

No homeowner radon tests have been submitted for New Berlin yet. Because radon is driven by regional soil and bedrock geology, readings from the closest cities—and the Waukesha County average—are the best available indicator of local conditions until New Berlin 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 New Berlin?

Radon mitigation in New Berlin 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 New Berlin?

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.