Clay City, IL Radon Levels

Q: What EPA Radon Zone is Clay City in?

Clay City is in Clay County, EPA Zone 2.

Q: How much does radon mitigation cost in Clay City?

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

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

Clay City, IL Radon Facts

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

County Clay County, IL

Zip Code 62824

Located in southeastern Illinois's Clay County, Clay City sits within EPA Zone 2 where radon testing data remains limited for the community. The area's Pennsylvanian coal measures and underlying limestone create geological conditions typical of the Illinois Basin, where moderate radon potential exists. Given the absence of specific testing data for zip code 62824, residents should prioritize radon testing to understand their home's individual risk profile.

7.40

pCi/L area average

Above EPA Action Level

Nearby homeowner readings average 7.40 pCi/L, based on 10 tests from 6 nearby cities. No readings have been submitted for Clay City 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+

Clay City, 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 Clay City, IL

No homeowner tests have been submitted for Clay City 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
Bridgeport	31.7 mi	5.00 pCi/L	1
Kell	32.1 mi	5.00 pCi/L	1
Effingham	33.2 mi	4.33 pCi/L	3
Mount Carmel	35.0 mi	5.00 pCi/L	2
Mount Vernon	38.8 mi	4.00 pCi/L	1
Palestine	45.8 mi	18.50 pCi/L	2

Clay County Radon Profile

EPA mapping assigns Clay County to Radon Zone 2, indicating moderate predicted indoor screening levels in the 2 to 4 pCi/L range based on regional geology. Direct test data for Clay County remains limited, so the closest neighboring readings are used here to represent the radon conditions homeowners are likely to encounter. As the second leading cause of lung cancer in the U.S., radon warrants testing in every Clay County home regardless of zone or a neighbor's results.

Radon FAQ for Clay City, IL

What EPA Radon Zone is Clay City in?

Clay City and the 62824 zip code are in Clay 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 Clay City?

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

Radon mitigation in Clay City 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 Clay City?

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.