Oneida, WI Radon Levels

Q: What EPA Radon Zone is Oneida in?

Oneida is in Brown County, EPA Zone 2.

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

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

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

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

Oneida, WI Radon Facts

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

County Brown County, WI

Zip Code 54155

Part of the greater Green Bay metropolitan area in Brown County, Oneida sits over Wisconsin's characteristic glacial till and limestone bedrock formations that contribute to the state's elevated radon potential. The community features a mix of newer suburban developments and established neighborhoods, most with full basements typical of Wisconsin construction. While comprehensive radon data for the 54155 zip code area is still being gathered, local homeowners should test their properties given the geological conditions favorable for radon accumulation.

4.00

pCi/L area average

Above EPA Action Level

Brown County average: 4.00 pCi/L, based on 1 user-submitted test across 1 city in the county. No homeowner readings have been submitted for Oneida 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+

Oneida, 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 Oneida, WI

No homeowner tests have been submitted for Oneida 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
Green Bay	8.0 mi	4.00 pCi/L	1
Pulaski	10.7 mi	4.00 pCi/L	1
Greenville	22.9 mi	7.00 pCi/L	1
Algoma	36.4 mi	5.00 pCi/L	1
Gresham	37.6 mi	9.00 pCi/L	1
Oshkosh	39.2 mi	19.00 pCi/L	1
New Holstein	39.8 mi	7.00 pCi/L	1
Mountain	49.0 mi	16.00 pCi/L	1

Brown County Radon Profile

EPA mapping assigns Brown 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 Brown County average 4.00 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 Brown County home regardless of zone or a neighbor's results.

Radon FAQ for Oneida, WI

What EPA Radon Zone is Oneida in?

Oneida and the 54155 zip code are in Brown 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 Oneida?

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

Radon mitigation in Oneida 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 Oneida?

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.