Wales, WI Radon Levels

Q: What EPA Radon Zone is Wales in?

Wales is in Waukesha County, EPA Zone 1.

Q: Why are radon readings shown from areas near Wales?

No homeowner radon tests have been submitted for Wales yet, so readings from the closest cities and the Waukesha County average are used as the best available indicator of local conditions. The EPA recommends testing every individual home.

Q: How much does radon mitigation cost in Wales?

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

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

Wales, WI Radon Facts

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

County Waukesha County, WI

Zip Code 53183

This small community in Waukesha County within the Milwaukee Metro area currently has limited radon testing data available. Given that southeastern Wisconsin sits over glacial deposits that can contribute to radon accumulation, homeowners in zip code 53183 are encouraged to test their properties. Professional radon testing provides the only reliable way to determine actual levels in individual homes.

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 Wales 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+

Wales, WI Radon Mitigation

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

Need Radon Mitigation or Testing in Wales?

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Radon Readings Near Wales, WI

No homeowner tests have been submitted for Wales 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	6.1 mi	5.50 pCi/L	2
Pewaukee	7.2 mi	10.00 pCi/L	1
Menomonee Falls	17.0 mi	6.50 pCi/L	2
Waterford	19.3 mi	9.00 pCi/L	2
Franklin	20.1 mi	6.00 pCi/L	1
Milwaukee	21.0 mi	10.00 pCi/L	3
Slinger	22.9 mi	20.00 pCi/L	1
Elkhorn	22.9 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 Wales, WI

What EPA Radon Zone is Wales in?

Wales and the 53183 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 Wales?

No homeowner radon tests have been submitted for Wales 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 Wales 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 Wales?

Radon mitigation in Wales 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 Wales?

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.