Cooksville, IL Radon Levels

Q: What EPA Radon Zone is Cooksville in?

Cooksville is in McLean County, EPA Zone 1.

Q: How much does radon mitigation cost in Cooksville?

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

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

Cooksville, IL Radon Facts

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

County McLean County, IL

Zip Code 61730

Positioned in central Illinois's McLean County within the Bloomington Metro area, Cooksville lies in EPA Zone 1 where the highest radon potential exists statewide. Though specific testing data for zip code 61730 is limited, the region's deep glacial moraine deposits over limestone bedrock create conditions highly favorable for radon gas production and migration. Local homes, predominantly featuring full basements typical of central Illinois construction, provide the enclosed below-grade spaces where radon readily accumulates.

8.50

pCi/L area average

Above EPA Action Level

McLean County average: 8.50 pCi/L, based on 8 user-submitted tests across 3 cities in the county. No homeowner readings have been submitted for Cooksville 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+

Cooksville, IL Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

Need Radon Mitigation or Testing in Cooksville?

100% Free, No-Obligation Quotes
Matches You with State-Licensed McLean County Pros

1-800-299-3578 309-716-3952 (local) Toll-free · Mon–Fri 8am–6pm ET

Radon Readings Near Cooksville, IL

No homeowner tests have been submitted for Cooksville 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
Le Roy	13.1 mi	5.00 pCi/L	1
Normal	13.4 mi	7.25 pCi/L	4
Bloomington	14.8 mi	11.33 pCi/L	3
Fairbury	18.4 mi	4.00 pCi/L	1
Pontiac	24.1 mi	10.50 pCi/L	2
Mahomet	29.6 mi	5.00 pCi/L	1
Mackinaw	32.1 mi	20.00 pCi/L	1
Paxton	33.9 mi	4.00 pCi/L	1

McLean County Radon Profile

McLean County falls in EPA Radon Zone 1, meaning the local uranium-bearing geology is predicted to drive average indoor radon screening levels above the EPA's 4 pCi/L action threshold. Homeowner-submitted tests from 3 cities in McLean County average 8.50 pCi/L across 8 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. Since radon is the second leading cause of lung cancer nationally, the EPA urges every household in McLean County to test, as levels can differ between neighboring homes.

Radon FAQ for Cooksville, IL

What EPA Radon Zone is Cooksville in?

Cooksville and the 61730 zip code are in McLean 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 Cooksville?

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

Radon mitigation in Cooksville 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 Cooksville?

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.