Roxana, IL Radon Levels

Q: What EPA Radon Zone is Roxana in?

Roxana is in Madison County, EPA Zone 2.

Q: Why are radon readings shown from areas near Roxana?

No homeowner radon tests have been submitted for Roxana yet, so readings from the closest cities and the Madison County average are used as the best available indicator of local conditions. The EPA recommends testing every individual home.

Q: How much does radon mitigation cost in Roxana?

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

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

Roxana, IL Radon Facts

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

County Madison County, IL

Zip Code 62084

Positioned in Madison County along the Mississippi River within the St. Louis Metro area, Roxana sits on river floodplain deposits over limestone bedrock that creates moderate radon potential. The industrial community in the 62084 zip code features predominantly early-to-mid 20th century homes, many with full basements typical of the region's construction practices. Testing data is currently limited for this area, making individual radon measurements valuable for residents seeking to understand their homes' indoor air quality conditions.

5.44

pCi/L area average

Above EPA Action Level

Madison County average: 5.44 pCi/L, based on 9 user-submitted tests across 8 cities in the county. No homeowner readings have been submitted for Roxana 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+

Roxana, 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 Roxana, IL

No homeowner tests have been submitted for Roxana 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
East Alton	2.2 mi	4.00 pCi/L	1
Glen Carbon	8.4 mi	2.50 pCi/L	2
Granite City	8.6 mi	8.00 pCi/L	1
Godfrey	9.6 mi	6.00 pCi/L	1
Maryville	11.1 mi	11.00 pCi/L	1
Collinsville	12.5 mi	5.00 pCi/L	1
Troy	14.1 mi	4.00 pCi/L	1
Caseyville	15.2 mi	7.50 pCi/L	2

Madison County Radon Profile

The soils and bedrock of Madison 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 8 cities in Madison County average 5.44 pCi/L across 9 tests — 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 Madison County to test, as levels can differ between neighboring homes.

Radon FAQ for Roxana, IL

What EPA Radon Zone is Roxana in?

Roxana and the 62084 zip code are in Madison 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 Roxana?

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

Radon mitigation in Roxana 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 Roxana?

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.