Altamont, IL Radon Levels

Q: What EPA Radon Zone is Altamont in?

Altamont is in Effingham County, EPA Zone 2.

Q: How much does radon mitigation cost in Altamont?

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

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

Altamont, IL Radon Facts

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

County Effingham County, IL

Zip Code 62411

Located in south-central Illinois's Effingham County, Altamont sits on glacial deposits over Pennsylvanian shale and coal measures that create moderate radon potential across the region. While specific testing data for the 62411 area is currently limited, the combination of the area's geology and prevalence of homes with basement foundations makes radon testing an important consideration for local residents.

4.33

pCi/L area average

Above EPA Action Level

Effingham County average: 4.33 pCi/L, based on 3 user-submitted tests across 1 city in the county. No homeowner readings have been submitted for Altamont 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+

Altamont, 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 Altamont, IL

No homeowner tests have been submitted for Altamont 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	10.8 mi	4.33 pCi/L	3
Shelbyville	27.4 mi	17.00 pCi/L	1
Mattoon	35.0 mi	9.33 pCi/L	3
Kell	38.9 mi	5.00 pCi/L	1
Moweaqua	41.4 mi	7.00 pCi/L	1
Charleston	42.3 mi	8.00 pCi/L	1
Taylorville	44.5 mi	2.00 pCi/L	1
Carlyle	46.4 mi	13.00 pCi/L	1

Effingham County Radon Profile

EPA mapping assigns Effingham 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 1 city in Effingham County average 4.33 pCi/L across 3 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 Effingham County home regardless of zone or a neighbor's results.

Radon FAQ for Altamont, IL

What EPA Radon Zone is Altamont in?

Altamont and the 62411 zip code are in Effingham 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 Altamont?

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

Radon mitigation in Altamont 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 Altamont?

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.