Big Bend, WI Radon Levels

Q: What EPA Radon Zone is Big Bend in?

Big Bend is in Waukesha County, EPA Zone 1.

Q: How much does radon mitigation cost in Big Bend?

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

Check local Big Bend radon levels and find certified testing and mitigation professionals to keep your home safe

Big Bend, WI Radon Facts

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

County Waukesha County, WI

Zip Code 53103

Big Bend straddles the Mukwonago River in Waukesha County, part of the Milwaukee Metro area where glacial deposits over dolomite bedrock create Wisconsin's highest radon potential. Testing data remains limited for this community, making individual home assessment crucial given the state's EPA Zone 1 designation. The area's suburban development pattern and full basement construction typical of southeastern Wisconsin provide ideal conditions for radon accumulation.

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 Big Bend 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+

Big Bend, 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 Big Bend, WI

No homeowner tests have been submitted for Big Bend 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	7.3 mi	5.50 pCi/L	2
Waterford	8.7 mi	9.00 pCi/L	2
Franklin	10.3 mi	6.00 pCi/L	1
Pewaukee	13.5 mi	10.00 pCi/L	1
Oak Creek	15.7 mi	8.33 pCi/L	3
Burlington	15.7 mi	7.00 pCi/L	1
Milwaukee	16.8 mi	10.00 pCi/L	3
Menomonee Falls	19.4 mi	6.50 pCi/L	2

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 Big Bend, WI

What EPA Radon Zone is Big Bend in?

Big Bend and the 53103 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 Big Bend?

No homeowner radon tests have been submitted for Big Bend 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 Big Bend 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 Big Bend?

Radon mitigation in Big Bend 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 Big Bend?

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.