Leaf River, IL Radon Levels

Q: What EPA Radon Zone is Leaf River in?

Leaf River is in Ogle County, EPA Zone 1.

Q: How much does radon mitigation cost in Leaf River?

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

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

Leaf River, IL Radon Facts

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

County Ogle County, IL

Zip Code 61047

Tucked away in Ogle County within the Rockford metropolitan area, Leaf River is built upon glacial till deposits from the Wisconsin glaciation that create soil conditions highly favorable for radon production. The rural community features a mix of older farmhouses and newer residential construction, many with traditional basement foundations. Given the EPA Zone 1 classification and limited testing data for zip code 61047, residents should prioritize radon testing in their homes.

9.00

pCi/L area average

Above EPA Action Level

Ogle County average: 9.00 pCi/L, based on 5 user-submitted tests across 4 cities in the county. No homeowner readings have been submitted for Leaf River 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+

Leaf River, 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 Leaf River, IL

No homeowner tests have been submitted for Leaf River 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
Byron	6.9 mi	11.50 pCi/L	2
Mount Morris	7.5 mi	4.00 pCi/L	1
Pecatonica	10.8 mi	11.00 pCi/L	1
Stillman Valley	10.8 mi	5.00 pCi/L	1
Freeport	15.8 mi	3.67 pCi/L	3
Davis	20.0 mi	8.00 pCi/L	1
Dixon	21.6 mi	14.00 pCi/L	2
Ashton	22.2 mi	4.00 pCi/L	1

Ogle County Radon Profile

Because of its underlying geology, Ogle County is mapped as EPA Radon Zone 1 — the most elevated classification — where predicted indoor screening averages exceed 4 pCi/L. Homeowner-submitted tests from 4 cities in Ogle County average 9.00 pCi/L across 5 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. As the second leading cause of lung cancer in the U.S., radon warrants testing in every Ogle County home regardless of zone or a neighbor's results.

Radon FAQ for Leaf River, IL

What EPA Radon Zone is Leaf River in?

Leaf River and the 61047 zip code are in Ogle 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 Leaf River?

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

Radon mitigation in Leaf River 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 Leaf River?

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.