Milwaukee, WI Radon Levels

Q: What is the average radon level in Milwaukee, WI?

Based on 3 user-submitted tests, the average radon level is 10.00 pCi/L.

Q: What EPA Radon Zone is Milwaukee in?

Milwaukee is in Milwaukee County, EPA Zone 2.

Q: How much does radon mitigation cost in Milwaukee?

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

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

Milwaukee, WI Radon Facts

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

County Milwaukee County, WI

Zip Code 53202

Avg. User Level 10.00 pCi/L

User Tests 3

Wisconsin's largest city in Milwaukee County shows significant radon concerns with an average level of 10.0 pCi/L that substantially exceeds the EPA's 4.0 pCi/L action level. Built largely on glacial deposits over limestone bedrock along Lake Michigan, Milwaukee's diverse housing stock includes many homes with basements where radon readily accumulates. With readings ranging from 4.0 to 20.0 pCi/L across the metro area, professional radon testing and mitigation are essential for homeowners throughout the city's zip codes.

10.00

pCi/L average

Above EPA Action Level

Based on 3 user-submitted radon tests for homes in Milwaukee, WI. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

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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Milwaukee, Wisconsin Radon Levels

User-submitted radon test readings from homes in the Milwaukee area.

Radon Level	City	Home Age	Foundation	Submitted
6 pCi/L	Milwaukee, WI	—	—	Feb 2021
20 pCi/L	Milwaukee, WI	0-20 Years	Full Basement	Feb 2019
4 pCi/L	Milwaukee, WI	51-99 Years	Full Basement	Aug 2017

Have a radon test result for Milwaukee? Submit your reading to help other homeowners.

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 Milwaukee, WI

What is the average radon level in Milwaukee, WI?

Based on 3 user-submitted tests, the average radon level in Milwaukee is 10.00 pCi/L. This exceeds the EPA's recommended action level of 4.0 pCi/L, and radon testing is recommended for all homes in the area.

What EPA Radon Zone is Milwaukee in?

Milwaukee and the 53202 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.

How much does radon mitigation cost in Milwaukee?

Radon mitigation in 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 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.

Radon Levels Near Milwaukee, WI

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

City	Distance	Avg User Level	Submissions
Menomonee Falls	10.4 mi	6.50 pCi/L	2
Franklin	10.7 mi	6.00 pCi/L	1
Oak Creek	11.8 mi	8.33 pCi/L	3
Thiensville	12.7 mi	5.00 pCi/L	1
Mequon	13.4 mi	6.00 pCi/L	1
Pewaukee	15.5 mi	10.00 pCi/L	1
Waukesha	15.5 mi	5.50 pCi/L	2
Cedarburg	17.4 mi	6.00 pCi/L	1