Macomb, IL Radon Levels

Q: What EPA Radon Zone is Macomb in?

Macomb is in McDonough County, EPA Zone 1.

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

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

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

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

Macomb, IL Radon Facts

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

County McDonough County, IL

Zip Code 61455

Located in McDonough County in western Illinois, Macomb currently lacks comprehensive radon testing data for reliable local analysis. The community sits within an area where Illinois River valley geology and underlying limestone formations create conditions that can influence radon accumulation. Residents in zip code 61455 should consider individual home testing, as Illinois's EPA Zone 1 classification indicates potential for elevated radon levels throughout much of the state.

9.00

pCi/L area average

Above EPA Action Level

Nearby homeowner readings average 9.00 pCi/L, based on 8 tests from 6 nearby cities. No readings have been submitted for Macomb yet, so the closest recorded data is shown as a benchmark. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Macomb, 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 Macomb, IL

No homeowner tests have been submitted for Macomb 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
Stronghurst	23.9 mi	13.00 pCi/L	2
Dallas City	24.7 mi	9.00 pCi/L	1
Cuba	26.3 mi	6.00 pCi/L	1
Monmouth	31.1 mi	8.00 pCi/L	1
Knoxville	37.2 mi	8.00 pCi/L	1
Quincy	49.9 mi	7.50 pCi/L	2

McDonough County Radon Profile

Because of its underlying geology, McDonough County is mapped as EPA Radon Zone 1 — the most elevated classification — where predicted indoor screening averages exceed 4 pCi/L. Direct test data for McDonough County remains limited, so the closest neighboring readings are used here to represent the radon conditions homeowners are likely to encounter. As the second leading cause of lung cancer in the U.S., radon warrants testing in every McDonough County home regardless of zone or a neighbor's results.

Radon FAQ for Macomb, IL

What EPA Radon Zone is Macomb in?

Macomb and the 61455 zip code are in McDonough 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 Macomb?

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

Radon mitigation in Macomb 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 Macomb?

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.