New Athens, IL Radon Levels

Q: What EPA Radon Zone is New Athens in?

New Athens is in St Clair County, EPA Zone 2.

Q: How much does radon mitigation cost in New Athens?

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

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

New Athens, IL Radon Facts

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

County St Clair County, IL

Zip Code 62264

This St. Clair County community sits on the Illinois side of the St. Louis Metro, where Mississippi River floodplain deposits overlay limestone bedrock. Testing information for New Athens in zip code 62264 remains limited, though the underlying geology suggests moderate radon potential. Homeowners should consider professional testing, particularly given the area's mix of older homes with stone foundations and newer suburban construction.

7.50

pCi/L area average

Above EPA Action Level

St Clair County average: 7.50 pCi/L, based on 12 user-submitted tests across 7 cities in the county. No homeowner readings have been submitted for New Athens 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+

New Athens, 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 New Athens, IL

No homeowner tests have been submitted for New Athens 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
Marissa	8.2 mi	4.00 pCi/L	1
Mascoutah	11.9 mi	6.50 pCi/L	2
Waterloo	14.9 mi	9.20 pCi/L	5
Belleville	16.4 mi	7.33 pCi/L	3
O Fallon	17.7 mi	6.00 pCi/L	1
Columbia	19.6 mi	8.00 pCi/L	4
Lebanon	20.4 mi	10.50 pCi/L	2
Fairview Heights	20.7 mi	9.00 pCi/L	1

St Clair County Radon Profile

EPA mapping assigns St Clair 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 7 cities in St Clair County average 7.50 pCi/L across 12 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 St Clair County home regardless of zone or a neighbor's results.

Radon FAQ for New Athens, IL

What EPA Radon Zone is New Athens in?

New Athens and the 62264 zip code are in St Clair 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 New Athens?

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

Radon mitigation in New Athens 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 New Athens?

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.