Oneida, IL Radon Levels

Q: What EPA Radon Zone is Oneida in?

Oneida is in Knox County, EPA Zone 1.

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 Knox 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, IL Radon Facts

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

County Knox County, IL

Zip Code 61467

This small community in Knox County sits within Illinois's agricultural heartland, where glacial deposits and underlying sedimentary rock contribute to the state's elevated radon potential. Local housing typically features basements and older foundation systems that can allow radon entry through cracks and gaps in concrete or stone. Since comprehensive radon data for the 61467 zip code area is still developing, residents should test their homes to determine individual radon levels.

8.00

pCi/L area average

Above EPA Action Level

Knox County average: 8.00 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, IL 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, IL

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
Knoxville	12.2 mi	8.00 pCi/L	1
New Windsor	14.0 mi	6.00 pCi/L	1
Kewanee	19.5 mi	8.00 pCi/L	1
Orion	20.8 mi	4.00 pCi/L	1
Monmouth	24.3 mi	8.00 pCi/L	1
Geneseo	26.9 mi	6.00 pCi/L	1
Coal Valley	27.0 mi	12.00 pCi/L	1
Annawan	27.6 mi	10.00 pCi/L	1

Knox County Radon Profile

The bedrock and soils beneath Knox County are classified by the EPA as Radon Zone 1, the highest-risk tier, with predicted average indoor screening levels above 4 pCi/L. Homeowner-submitted tests from 1 city in Knox County average 8.00 pCi/L across 1 test — 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 Knox County.

Radon FAQ for Oneida, IL

What EPA Radon Zone is Oneida in?

Oneida and the 61467 zip code are in Knox 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 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 Knox 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.