Elm Grove, WI Radon Levels

Q: What EPA Radon Zone is Elm Grove in?

Elm Grove is in Waukesha County, EPA Zone 1.

Q: How much does radon mitigation cost in Elm Grove?

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

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

Elm Grove, WI Radon Facts

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

County Waukesha County, WI

Zip Code 53122

Prosperous Waukesha County hosts this upscale Milwaukee suburb, known for its well-maintained housing stock and tree-lined neighborhoods. Built on glacial deposits over limestone bedrock, the area's geology can support radon production in zip code 53122. With testing data currently limited, homeowners should prioritize professional radon testing, especially given the prevalence of finished basements in this established community.

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 Elm Grove 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+

Elm Grove, 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 Elm Grove, WI

No homeowner tests have been submitted for Elm Grove yet, so the closest user-submitted readings from neighboring communities are shown below. Radon varies by home — testing is the only way to know your level.

Radon Level	City	Distance	Home Age	Foundation	Submitted
6 pCi/L	Milwaukee, WI	5.9 mi	—	—	Feb 2021
20 pCi/L	Milwaukee, WI	5.9 mi	0-20 Years	Full Basement	Feb 2019
4 pCi/L	Milwaukee, WI	5.9 mi	51-99 Years	Full Basement	Aug 2017
7 pCi/L	Menomonee Falls, WI	7.9 mi	21-50 Years	Full Basement	Dec 2022
10 pCi/L	Pewaukee, WI	9.7 mi	0-20 Years	Full Basement	Jul 2022
5 pCi/L	Waukesha, WI	9.8 mi	0-20 Years	Partial Basement	Aug 2019
6 pCi/L	Waukesha, WI	9.8 mi	0-20 Years	Full Basement	Apr 2017
6 pCi/L	Franklin, WI	10.8 mi	21-50 Years	Full Basement	Feb 2016

Readings are drawn from the nearest cities with submitted data. Have a result for Elm Grove? Submit your reading to help your neighbors.

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 Elm Grove, WI

What EPA Radon Zone is Elm Grove in?

Elm Grove and the 53122 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 Elm Grove?

No homeowner radon tests have been submitted for Elm Grove 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 Elm Grove 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 Elm Grove?

Radon mitigation in Elm Grove 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 Elm Grove?

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.

Radon Levels Near Elm Grove, WI

User-submitted radon levels from the cities closest to Elm Grove with recorded test data. Explore nearby communities to compare local readings.

City	Distance	Avg User Level	Submissions
Milwaukee	5.9 mi	10.00 pCi/L	3
Menomonee Falls	7.9 mi	6.50 pCi/L	2
Pewaukee	9.7 mi	10.00 pCi/L	1
Waukesha	9.8 mi	5.50 pCi/L	2
Franklin	10.8 mi	6.00 pCi/L	1
Thiensville	14.0 mi	5.00 pCi/L	1
Mequon	14.3 mi	6.00 pCi/L	1
Oak Creek	14.3 mi	8.33 pCi/L	3