Delavan, IL Radon Levels

Q: What EPA Radon Zone is Delavan in?

Delavan is in Tazewell County, EPA Zone 1.

Q: How much does radon mitigation cost in Delavan?

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

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

Delavan, IL Radon Facts

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

County Tazewell County, IL

Zip Code 61734

Situated in Tazewell County within the Peoria Metro area, Delavan rests in the Illinois River valley where alluvial soils over limestone bedrock create variable radon conditions. Local testing data remains limited for zip code 61734, making professional radon testing essential for homeowners. The area's mix of historic and postwar homes, many with full basements, provides the below-grade spaces where radon can accumulate most readily.

11.00

pCi/L area average

Above EPA Action Level

Tazewell County average: 11.00 pCi/L, based on 4 user-submitted tests across 2 cities in the county. No homeowner readings have been submitted for Delavan 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+

Delavan, 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 Delavan, IL

No homeowner tests have been submitted for Delavan 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	15.3 mi	20.00 pCi/L	1
Mapleton	19.4 mi	8.00 pCi/L	1
East Peoria	21.0 mi	8.00 pCi/L	3
Peoria	23.9 mi	5.00 pCi/L	1
Lincolns New Salem	26.9 mi	8.00 pCi/L	1
Williamsville	28.7 mi	1.00 pCi/L	1
Bloomington	28.7 mi	11.33 pCi/L	3
Metamora	29.2 mi	7.50 pCi/L	2

Tazewell County Radon Profile

Tazewell 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 2 cities in Tazewell County average 11.00 pCi/L across 4 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 Tazewell County to test, as levels can differ between neighboring homes.

Radon FAQ for Delavan, IL

What EPA Radon Zone is Delavan in?

Delavan and the 61734 zip code are in Tazewell 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 Delavan?

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

Radon mitigation in Delavan 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 Delavan?

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.