Eldorado, IL Radon Levels

Q: What EPA Radon Zone is Eldorado in?

Eldorado is in Saline County, EPA Zone 2.

Q: How much does radon mitigation cost in Eldorado?

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

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

Eldorado, IL Radon Facts

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

County Saline County, IL

Zip Code 62930

Found in Saline County within southern Illinois near the Shawnee National Forest region, Eldorado sits where Pennsylvanian-era coal measures and shale deposits create generally moderate radon conditions. Testing data for zip code 62930 remains limited, making individual home testing important for residents to understand their specific exposure risk. The area's coal-bearing geology and residual clay soils can influence radon gas movement into homes with basements or crawl spaces.

6.33

pCi/L area average

Above EPA Action Level

Nearby homeowner readings average 6.33 pCi/L, based on 3 tests from 3 nearby cities. No readings have been submitted for Eldorado 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+

Eldorado, 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 Eldorado, IL

No homeowner tests have been submitted for Eldorado 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
Marion	27.2 mi	5.00 pCi/L	1
Mount Vernon	43.1 mi	4.00 pCi/L	1
Murphysboro	48.6 mi	10.00 pCi/L	1

Saline County Radon Profile

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

Radon FAQ for Eldorado, IL

What EPA Radon Zone is Eldorado in?

Eldorado and the 62930 zip code are in Saline 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 Eldorado?

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

Radon mitigation in Eldorado 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 Eldorado?

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.