Keithsburg, IL Radon Levels

Q: What EPA Radon Zone is Keithsburg in?

Keithsburg is in Mercer County, EPA Zone 1.

Q: How much does radon mitigation cost in Keithsburg?

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

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

Keithsburg, IL Radon Facts

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

County Mercer County, IL

Zip Code 61442

Positioned along the Mississippi River in Mercer County, Keithsburg sits on Illinois River valley alluvial soils combined with underlying Ordovician limestone that creates variable radon conditions. The community's housing reflects typical river town architecture with many homes featuring basements or partial foundations. Testing data is currently limited for the 61442 area, making individual home testing essential for residents to understand their radon exposure risk.

6.00

pCi/L area average

Above EPA Action Level

Mercer County average: 6.00 pCi/L, based on 1 user-submitted test across 1 city in the county. No homeowner readings have been submitted for Keithsburg 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+

Keithsburg, 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 Keithsburg, IL

No homeowner tests have been submitted for Keithsburg 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
Monmouth	19.9 mi	8.00 pCi/L	1
Stronghurst	24.3 mi	13.00 pCi/L	2
New Windsor	25.1 mi	6.00 pCi/L	1
Rock Island	32.7 mi	4.50 pCi/L	2
Coal Valley	33.1 mi	12.00 pCi/L	1
Orion	33.3 mi	4.00 pCi/L	1
Moline	34.7 mi	5.00 pCi/L	1
Knoxville	35.9 mi	8.00 pCi/L	1

Mercer County Radon Profile

Because of its underlying geology, Mercer 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 1 city in Mercer County average 6.00 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 Mercer County home regardless of zone or a neighbor's results.

Radon FAQ for Keithsburg, IL

What EPA Radon Zone is Keithsburg in?

Keithsburg and the 61442 zip code are in Mercer 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 Keithsburg?

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

Radon mitigation in Keithsburg 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 Keithsburg?

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.