Maquon, IL Radon Levels

Q: What EPA Radon Zone is Maquon in?

Maquon is in Knox County, EPA Zone 1.

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

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

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

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

Maquon, IL Radon Facts

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

County Knox County, IL

Zip Code 61458

This small Knox County community lacks comprehensive radon testing data, though its location in western Illinois presents geological conditions worth monitoring. The area's prairie soils and underlying bedrock formations can create variable radon conditions that differ from property to property in zip code 61458. Given the limited testing information available, homeowners are strongly encouraged to conduct professional radon assessments to establish their home's specific risk level.

8.00

pCi/L area average

Above EPA Action Level

Knox 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 Maquon 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+

Maquon, 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 Maquon, IL

No homeowner tests have been submitted for Maquon 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
Knoxville	9.8 mi	8.00 pCi/L	1
Cuba	19.7 mi	6.00 pCi/L	1
Monmouth	24.8 mi	8.00 pCi/L	1
Mapleton	28.0 mi	8.00 pCi/L	1
Dunlap	29.6 mi	7.00 pCi/L	1
Peoria	30.8 mi	5.00 pCi/L	1
New Windsor	31.6 mi	6.00 pCi/L	1
Kewanee	34.6 mi	8.00 pCi/L	1

Knox County Radon Profile

The bedrock and soils beneath Knox County are classified by the EPA as Radon Zone 1, the highest-risk tier, with predicted average indoor screening levels above 4 pCi/L. Homeowner-submitted tests from 1 city in Knox 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. Radon is the second leading cause of lung cancer in the United States, and a short-term test is the only way to confirm a specific home's level in Knox County.

Radon FAQ for Maquon, IL

What EPA Radon Zone is Maquon in?

Maquon and the 61458 zip code are in Knox 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 Maquon?

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

Radon mitigation in Maquon 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 Maquon?

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.