Aniwa, WI Radon Levels

Q: What EPA Radon Zone is Aniwa in?

Aniwa is in Marathon County, EPA Zone 1.

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

No homeowner radon tests have been submitted for Aniwa yet, so readings from the closest cities and the Marathon 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 Aniwa?

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

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

Aniwa, WI Radon Facts

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

County Marathon County, WI

Zip Code 54408

Situated in Marathon County within Wisconsin's central forest region, Aniwa's glacial soils and bedrock geology contribute to the state's generally elevated radon potential. Many homes in the 54408 area feature full basements typical of northern Wisconsin construction, providing enclosed spaces where radon can accumulate. Given the limited testing data available for this rural community, homeowners are strongly encouraged to test their properties for radon.

9.50

pCi/L area average

Above EPA Action Level

Marathon County average: 9.50 pCi/L, based on 2 user-submitted tests across 2 cities in the county. No homeowner readings have been submitted for Aniwa 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+

Aniwa, 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 Aniwa, WI

No homeowner tests have been submitted for Aniwa 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
Antigo	13.5 mi	19.00 pCi/L	1
Wittenberg	15.9 mi	11.00 pCi/L	1
Deerbrook	17.8 mi	8.00 pCi/L	1
Mosinee	21.5 mi	6.00 pCi/L	1
Gleason	23.5 mi	4.00 pCi/L	2
Pearson	29.6 mi	7.00 pCi/L	1
Gresham	29.8 mi	9.00 pCi/L	1
Stevens Point	33.7 mi	6.00 pCi/L	3

Marathon County Radon Profile

Because of its underlying geology, Marathon County is mapped as EPA Radon Zone 1 — the most elevated classification — where predicted indoor screening averages exceed 4 pCi/L. Homeowner-submitted tests from 2 cities in Marathon County average 9.50 pCi/L across 2 tests — 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 Marathon County home regardless of zone or a neighbor's results.

Radon FAQ for Aniwa, WI

What EPA Radon Zone is Aniwa in?

Aniwa and the 54408 zip code are in Marathon 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 Aniwa?

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

Radon mitigation in Aniwa 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 Aniwa?

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.