Arrowsmith, IL Radon Levels

Q: What EPA Radon Zone is Arrowsmith in?

Arrowsmith is in McLean County, EPA Zone 1.

Q: How much does radon mitigation cost in Arrowsmith?

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

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

Arrowsmith, IL Radon Facts

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

County McLean County, IL

Zip Code 61722

This McLean County farming community in zip code 61722 sits within the Bloomington Metro area atop deep glacial moraine deposits that create moderate-to-high radon potential across central Illinois. Arrowsmith's housing reflects typical rural Illinois character, with older farmsteads and newer homes often featuring full or partial basement foundations. Although specific testing data for this small town is limited, the underlying limestone bedrock and glacial soils common to McLean County suggest homeowners should consider radon testing.

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 Arrowsmith 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+

Arrowsmith, 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 Arrowsmith, IL

No homeowner tests have been submitted for Arrowsmith 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	8.2 mi	5.00 pCi/L	1
Mahomet	19.4 mi	5.00 pCi/L	1
Bloomington	19.8 mi	11.33 pCi/L	3
Normal	20.1 mi	7.25 pCi/L	4
Fairbury	23.8 mi	4.00 pCi/L	1
Monticello	26.8 mi	4.50 pCi/L	2
Champaign	27.9 mi	6.67 pCi/L	3
Paxton	28.1 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 Arrowsmith, IL

What EPA Radon Zone is Arrowsmith in?

Arrowsmith and the 61722 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 Arrowsmith?

No homeowner radon tests have been submitted for Arrowsmith 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 Arrowsmith 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 Arrowsmith?

Radon mitigation in Arrowsmith 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 Arrowsmith?

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.