Stockton, IL Radon Levels

Q: What EPA Radon Zone is Stockton in?

Stockton is in Jo Daviess County, EPA Zone 1.

Q: How much does radon mitigation cost in Stockton?

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

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

Stockton, IL Radon Facts

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

County Jo Daviess County, IL

Zip Code 61085

Tucked away in Jo Daviess County's rolling hills, Stockton (61085) sits above dolomite bedrock formations typical of northwestern Illinois' driftless region. Although specific radon testing data for this rural community is currently unavailable, the area's geological profile and Illinois' EPA Zone 1 classification suggest homeowners should test their properties. Local homes ranging from historic farmhouses to newer rural construction may show varying radon accumulation patterns.

5.50

pCi/L area average

Above EPA Action Level

Jo Daviess County average: 5.50 pCi/L, based on 4 user-submitted tests across 4 cities in the county. No homeowner readings have been submitted for Stockton 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+

Stockton, 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 Stockton, IL

No homeowner tests have been submitted for Stockton 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
Hanover	15.1 mi	5.00 pCi/L	1
Freeport	20.0 mi	3.67 pCi/L	3
Lanark	20.3 mi	12.00 pCi/L	3
Galena	20.9 mi	1.00 pCi/L	1
Orangeville	21.0 mi	14.00 pCi/L	1
East Dubuque	31.3 mi	8.00 pCi/L	2
Davis	32.0 mi	8.00 pCi/L	1
Pecatonica	34.5 mi	11.00 pCi/L	1

Jo Daviess County Radon Profile

The bedrock and soils beneath Jo Daviess 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 4 cities in Jo Daviess County average 5.50 pCi/L across 4 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 Jo Daviess County.

Radon FAQ for Stockton, IL

What EPA Radon Zone is Stockton in?

Stockton and the 61085 zip code are in Jo Daviess 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 Stockton?

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

Radon mitigation in Stockton 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 Stockton?

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.