Johnsonville, IL Radon Levels

Q: What EPA Radon Zone is Johnsonville in?

Johnsonville is in Wayne County, EPA Zone 2.

Q: How much does radon mitigation cost in Johnsonville?

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

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

Johnsonville, IL Radon Facts

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

County Wayne County, IL

Zip Code 62850

Located in southeastern Illinois within Wayne County, Johnsonville sits on Pennsylvanian-era coal measures and shale deposits that typically produce moderate radon conditions. Testing data for the 62850 zip code remains limited, making individual home testing important for establishing baseline radon levels.

5.55

pCi/L area average

Above EPA Action Level

Nearby homeowner readings average 5.55 pCi/L, based on 9 tests from 6 nearby cities. No readings have been submitted for Johnsonville 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+

Johnsonville, IL Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

Need Radon Mitigation or Testing in Johnsonville?

100% Free, No-Obligation Quotes
Matches You with State-Licensed Wayne County Pros

1-800-299-3578 217-717-8001 (local) Toll-free · Mon–Fri 8am–6pm ET

Radon Readings Near Johnsonville, IL

No homeowner tests have been submitted for Johnsonville 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
Kell	20.3 mi	5.00 pCi/L	1
Mount Vernon	24.7 mi	4.00 pCi/L	1
Mount Carmel	41.0 mi	5.00 pCi/L	2
Effingham	41.4 mi	4.33 pCi/L	3
Bridgeport	43.5 mi	5.00 pCi/L	1
Carlyle	45.9 mi	13.00 pCi/L	1

Wayne County Radon Profile

The soils and bedrock of Wayne 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 Wayne 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 Wayne County to test, as levels can differ between neighboring homes.

Radon FAQ for Johnsonville, IL

What EPA Radon Zone is Johnsonville in?

Johnsonville and the 62850 zip code are in Wayne 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 Johnsonville?

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

Radon mitigation in Johnsonville 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 Johnsonville?

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.