Walshville, IL Radon Levels

Q: What EPA Radon Zone is Walshville in?

Walshville is in Montgomery County, EPA Zone 2.

Q: How much does radon mitigation cost in Walshville?

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

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

Walshville, IL Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)

County Montgomery County, IL

Zip Code 62091

Located in Montgomery County within Illinois's central prairie region, Walshville sits on deep glacial deposits over Pennsylvanian-era limestone that can contribute to elevated radon levels. The community features primarily single-family homes and rural properties in zip code 62091. With radon testing data currently limited for this area, residents should prioritize professional testing given the underlying geology's radon-producing potential.

6.58

pCi/L area average

Above EPA Action Level

Nearby homeowner readings average 6.58 pCi/L, based on 12 tests from 10 nearby cities. No readings have been submitted for Walshville yet, so the closest recorded data is shown as a benchmark. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Walshville, 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 Walshville, IL

No homeowner tests have been submitted for Walshville 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
Staunton	8.4 mi	8.00 pCi/L	1
Highland	19.8 mi	6.00 pCi/L	1
Carlinville	20.8 mi	9.00 pCi/L	1
Troy	25.7 mi	4.00 pCi/L	1
East Alton	26.7 mi	4.00 pCi/L	1
Glen Carbon	26.8 mi	2.50 pCi/L	2
Maryville	29.1 mi	11.00 pCi/L	1
Collinsville	31.4 mi	5.00 pCi/L	1

Montgomery County Radon Profile

The soils and bedrock of Montgomery County place it in EPA Radon Zone 2, a moderate-risk classification with predicted indoor averages of 2 to 4 pCi/L. Few homeowner tests have been logged inside Montgomery County so far, which is why this page draws on the nearest recorded readings to illustrate regional radon levels. Since radon is the second leading cause of lung cancer nationally, the EPA urges every household in Montgomery County to test, as levels can differ between neighboring homes.

Radon FAQ for Walshville, IL

What EPA Radon Zone is Walshville in?

Walshville and the 62091 zip code are in Montgomery County, which has an EPA assigned Radon Zone of 2. A zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L.

Why are radon readings shown from areas near Walshville?

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

Radon mitigation in Walshville 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 Walshville?

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.