Stewardson, IL Radon Levels

Q: What EPA Radon Zone is Stewardson in?

Stewardson is in Shelby County, EPA Zone 2.

Q: How much does radon mitigation cost in Stewardson?

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

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

Stewardson, IL Radon Facts

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

County Shelby County, IL

Zip Code 62463

Central Illinois' Shelby County provides the rural setting for Stewardson, where deep glacial deposits over Pennsylvanian bedrock create moderate radon potential. Testing data for zip code 62463 is limited, making professional radon measurement essential for area residents. The central Illinois prairie region's combination of glacial soils and limestone bedrock can produce variable radon levels that require individual home assessment.

12.00

pCi/L area average

Above EPA Action Level

Shelby County average: 12.00 pCi/L, based on 2 user-submitted tests across 2 cities in the county. No homeowner readings have been submitted for Stewardson 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+

Stewardson, 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 Stewardson, IL

No homeowner tests have been submitted for Stewardson 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
Effingham	11.1 mi	4.33 pCi/L	3
Shelbyville	15.9 mi	17.00 pCi/L	1
Mattoon	19.8 mi	9.33 pCi/L	3
Charleston	28.5 mi	8.00 pCi/L	1
Moweaqua	31.9 mi	7.00 pCi/L	1
Taylorville	40.2 mi	2.00 pCi/L	1
Tuscola	40.9 mi	17.00 pCi/L	1

Shelby County Radon Profile

EPA mapping assigns Shelby County to Radon Zone 2, indicating moderate predicted indoor screening levels in the 2 to 4 pCi/L range based on regional geology. Homeowner-submitted tests from 2 cities in Shelby County average 12.00 pCi/L across 2 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. As the second leading cause of lung cancer in the U.S., radon warrants testing in every Shelby County home regardless of zone or a neighbor's results.

Radon FAQ for Stewardson, IL

What EPA Radon Zone is Stewardson in?

Stewardson and the 62463 zip code are in Shelby 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 Stewardson?

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

Radon mitigation in Stewardson 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 Stewardson?

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.