Alexis, IL Radon Levels

Q: What EPA Radon Zone is Alexis in?

Alexis is in Warren County, EPA Zone 1.

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

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

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

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

Alexis, IL Radon Facts

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

County Warren County, IL

Zip Code 61412

Rural Warren County's Alexis community, part of the Davenport Metro area, sits atop Illinois River valley deposits that can contribute to radon accumulation in homes. Testing data for this 61412 zip code area remains limited, making individual home testing particularly important for residents with basements or lower-level living spaces.

8.00

pCi/L area average

Above EPA Action Level

Warren 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 Alexis 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+

Alexis, 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 Alexis, IL

No homeowner tests have been submitted for Alexis 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	11.0 mi	6.00 pCi/L	1
Monmouth	11.1 mi	8.00 pCi/L	1
Knoxville	16.6 mi	8.00 pCi/L	1
Orion	23.0 mi	4.00 pCi/L	1
Coal Valley	26.8 mi	12.00 pCi/L	1
Stronghurst	28.8 mi	13.00 pCi/L	2
Rock Island	30.4 mi	4.50 pCi/L	2
Moline	30.4 mi	5.00 pCi/L	1

Warren County Radon Profile

Warren 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 1 city in Warren 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. Since radon is the second leading cause of lung cancer nationally, the EPA urges every household in Warren County to test, as levels can differ between neighboring homes.

Radon FAQ for Alexis, IL

What EPA Radon Zone is Alexis in?

Alexis and the 61412 zip code are in Warren 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 Alexis?

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

Radon mitigation in Alexis 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 Alexis?

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.