Ophiem, IL Radon Levels

Q: What EPA Radon Zone is Ophiem in?

Ophiem is in Henry County, EPA Zone 1.

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

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

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

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

Ophiem, IL Radon Facts

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

County Henry County, IL

Zip Code 61468

Ophiem in Henry County within the Davenport Metro has minimal radon testing data for the 61468 area. Illinois River valley alluvial soils combined with underlying limestone create variable radon conditions that can differ significantly between neighboring properties. Testing is particularly important given the EPA Zone 1 classification and prevalence of basement construction.

7.00

pCi/L area average

Above EPA Action Level

Henry County average: 7.00 pCi/L, based on 4 user-submitted tests across 4 cities in the county. No homeowner readings have been submitted for Ophiem 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+

Ophiem, 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 Ophiem, IL

No homeowner tests have been submitted for Ophiem 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
New Windsor	5.3 mi	6.00 pCi/L	1
Orion	7.7 mi	4.00 pCi/L	1
Coal Valley	13.2 mi	12.00 pCi/L	1
Moline	17.4 mi	5.00 pCi/L	1
Geneseo	18.7 mi	6.00 pCi/L	1
Rock Island	18.9 mi	4.50 pCi/L	2
Kewanee	23.9 mi	8.00 pCi/L	1
Knoxville	24.2 mi	8.00 pCi/L	1

Henry County Radon Profile

Henry County falls in EPA Radon Zone 1, meaning the local uranium-bearing geology is predicted to drive average indoor radon screening levels above the EPA's 4 pCi/L action threshold. Homeowner-submitted tests from 4 cities in Henry County average 7.00 pCi/L across 4 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. Since radon is the second leading cause of lung cancer nationally, the EPA urges every household in Henry County to test, as levels can differ between neighboring homes.

Radon FAQ for Ophiem, IL

What EPA Radon Zone is Ophiem in?

Ophiem and the 61468 zip code are in Henry 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 Ophiem?

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

Radon mitigation in Ophiem 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 Ophiem?

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.