Ohio, IL Radon Levels

Q: What EPA Radon Zone is Ohio in?

Ohio is in Bureau County, EPA Zone 1.

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

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

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

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

Ohio, IL Radon Facts

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

County Bureau County, IL

Zip Code 61349

Located in north-central Illinois's Bureau County, Ohio sits within the Illinois River valley where alluvial soils over limestone bedrock create moderate radon potential. The small community's housing stock in zip code 61349 reflects typical rural Illinois construction with many homes featuring full basements. While specific radon testing data isn't available for Ohio, the area's geological characteristics suggest residents should test their homes.

7.50

pCi/L area average

Above EPA Action Level

Bureau County average: 7.50 pCi/L, based on 4 user-submitted tests across 3 cities in the county. No homeowner readings have been submitted for Ohio 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+

Ohio, 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 Ohio, IL

No homeowner tests have been submitted for Ohio 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
Walnut	7.9 mi	5.00 pCi/L	1
Princeton	12.1 mi	11.50 pCi/L	2
Amboy	12.9 mi	5.00 pCi/L	1
Spring Valley	19.5 mi	2.00 pCi/L	1
Rock Falls	20.0 mi	6.00 pCi/L	2
Dixon	21.5 mi	14.00 pCi/L	2
Peru	22.2 mi	6.50 pCi/L	2
Annawan	25.5 mi	10.00 pCi/L	1

Bureau County Radon Profile

Because of its underlying geology, Bureau 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 3 cities in Bureau County average 7.50 pCi/L across 4 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 Bureau County home regardless of zone or a neighbor's results.

Radon FAQ for Ohio, IL

What EPA Radon Zone is Ohio in?

Ohio and the 61349 zip code are in Bureau 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 Ohio?

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

Radon mitigation in Ohio 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 Ohio?

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.