Trempealeau, WI Radon Levels

Q: What EPA Radon Zone is Trempealeau in?

Trempealeau is in Trempealeau County, EPA Zone 2.

Q: How much does radon mitigation cost in Trempealeau?

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

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

Trempealeau, WI Radon Facts

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

County Trempealeau County, WI

Zip Code 54661

Situated along the Mississippi River in Trempealeau County, this historic river town sits on a mix of alluvial deposits and limestone bluffs that can create variable radon conditions. While testing data for zip code 54661 remains limited, the area's diverse geology and older housing stock make radon testing advisable for properties throughout this La Crosse metro community.

5.00

pCi/L area average

Above EPA Action Level

Trempealeau County average: 5.00 pCi/L, based on 1 user-submitted test across 1 city in the county. No homeowner readings have been submitted for Trempealeau 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+

Trempealeau, 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 Trempealeau, WI

No homeowner tests have been submitted for Trempealeau 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
2 pCi/L	Holmen, WI	9.4 mi	0-20 Years	Full Basement	Sep 2023
3 pCi/L	Onalaska, WI	13.0 mi	21-50 Years	Partial Basement	Jan 2022
5 pCi/L	Osseo, WI	38.6 mi	0-20 Years	—	Jul 2024

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

Trempealeau County Radon Profile

EPA mapping assigns Trempealeau County to Radon Zone 2, indicating moderate predicted indoor screening levels in the 2 to 4 pCi/L range based on regional geology. Homeowner-submitted tests from 1 city in Trempealeau County average 5.00 pCi/L across 1 test — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. As the second leading cause of lung cancer in the U.S., radon warrants testing in every Trempealeau County home regardless of zone or a neighbor's results.

Radon FAQ for Trempealeau, WI

What EPA Radon Zone is Trempealeau in?

Trempealeau and the 54661 zip code are in Trempealeau 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.

Why are radon readings shown from areas near Trempealeau?

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

Radon mitigation in Trempealeau 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 Trempealeau?

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 Trempealeau, WI

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

City	Distance	Avg User Level	Submissions
Holmen	9.4 mi	2.00 pCi/L	1
Onalaska	13.0 mi	3.00 pCi/L	1
Osseo	38.6 mi	5.00 pCi/L	1