Aledo, IL Radon Levels

Q: What EPA Radon Zone is Aledo in?

Aledo is in Mercer County, EPA Zone 1.

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

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

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

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

Aledo, IL Radon Facts

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

County Mercer County, IL

Zip Code 61231

Positioned in Mercer County within the Davenport Metro area, Aledo sits in EPA Zone 1 where Illinois River valley alluvial soils combined with underlying Ordovician limestone create variable radon conditions. Testing data is limited for this 61231 zip code area, making home testing essential for residents. The region's predominantly single-family homes with full basements provide ideal conditions for radon accumulation.

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 Aledo 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+

Aledo, 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 Aledo, IL

No homeowner tests have been submitted for Aledo 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	14.7 mi	6.00 pCi/L	1
Monmouth	20.7 mi	8.00 pCi/L	1
Coal Valley	21.6 mi	12.00 pCi/L	1
Orion	21.7 mi	4.00 pCi/L	1
Rock Island	22.1 mi	4.50 pCi/L	2
Moline	23.7 mi	5.00 pCi/L	1
Knoxville	31.0 mi	8.00 pCi/L	1
Stronghurst	32.4 mi	13.00 pCi/L	2

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 Aledo, IL

What EPA Radon Zone is Aledo in?

Aledo and the 61231 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 Aledo?

No homeowner radon tests have been submitted for Aledo 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 Aledo 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 Aledo?

Radon mitigation in Aledo 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 Aledo?

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.