Congerville, IL Radon Levels

Q: What EPA Radon Zone is Congerville in?

Congerville is in Woodford County, EPA Zone 1.

Q: How much does radon mitigation cost in Congerville?

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

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

Congerville, IL Radon Facts

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

County Woodford County, IL

Zip Code 61729

Situated in Woodford County within the Bloomington Metro area, Congerville sits on Illinois River valley terrain that creates variable radon conditions. The area's alluvial soils over limestone bedrock can produce radon levels that differ significantly between neighboring properties. With testing data for the 61729 area currently limited, residents should test their homes to establish individual radon baselines.

7.50

pCi/L area average

Above EPA Action Level

Woodford County average: 7.50 pCi/L, based on 2 user-submitted tests across 2 cities in the county. No homeowner readings have been submitted for Congerville 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+

Congerville, 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 Congerville, IL

No homeowner tests have been submitted for Congerville 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
Mackinaw	9.5 mi	20.00 pCi/L	1
Normal	13.4 mi	7.25 pCi/L	4
Bloomington	15.1 mi	11.33 pCi/L	3
Metamora	16.6 mi	7.50 pCi/L	2
East Peoria	18.8 mi	8.00 pCi/L	3
Peoria	22.9 mi	5.00 pCi/L	1
Mapleton	27.2 mi	8.00 pCi/L	1
Dunlap	27.8 mi	7.00 pCi/L	1

Woodford County Radon Profile

The bedrock and soils beneath Woodford 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 2 cities in Woodford County average 7.50 pCi/L across 2 tests — 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 Woodford County.

Radon FAQ for Congerville, IL

What EPA Radon Zone is Congerville in?

Congerville and the 61729 zip code are in Woodford 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 Congerville?

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

Radon mitigation in Congerville 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 Congerville?

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.