Aviston, IL Radon Levels

Q: What EPA Radon Zone is Aviston in?

Aviston is in Clinton County, EPA Zone 2.

Q: How much does radon mitigation cost in Aviston?

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

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

Aviston, IL Radon Facts

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

County Clinton County, IL

Zip Code 62216

Rural Aviston in Clinton County sits within the St. Louis metro area where Mississippi River floodplain deposits and underlying Mississippian limestone create moderate radon potential. Testing data for this community (62216) is currently limited, making individual home testing important for accurate risk assessment. The area's geological conditions can produce variable radon levels that differ significantly between neighboring properties.

13.00

pCi/L area average

Above EPA Action Level

Clinton County average: 13.00 pCi/L, based on 1 user-submitted test across 1 city in the county. No homeowner readings have been submitted for Aviston 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+

Aviston, 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 Aviston, IL

No homeowner tests have been submitted for Aviston 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
Lebanon	10.6 mi	10.50 pCi/L	2
Highland	11.4 mi	6.00 pCi/L	1
Carlyle	12.0 mi	13.00 pCi/L	1
Mascoutah	13.6 mi	6.50 pCi/L	2
O Fallon	16.0 mi	6.00 pCi/L	1
Troy	16.5 mi	4.00 pCi/L	1
Maryville	20.9 mi	11.00 pCi/L	1
Collinsville	21.2 mi	5.00 pCi/L	1

Clinton County Radon Profile

The soils and bedrock of Clinton County place it in EPA Radon Zone 2, a moderate-risk classification with predicted indoor averages of 2 to 4 pCi/L. Homeowner-submitted tests from 1 city in Clinton County average 13.00 pCi/L across 1 test — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. Since radon is the second leading cause of lung cancer nationally, the EPA urges every household in Clinton County to test, as levels can differ between neighboring homes.

Radon FAQ for Aviston, IL

What EPA Radon Zone is Aviston in?

Aviston and the 62216 zip code are in Clinton 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 Aviston?

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

Radon mitigation in Aviston 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 Aviston?

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.