East Saint Louis, IL Radon Levels

Q: What EPA Radon Zone is East Saint Louis in?

East Saint Louis is in St Clair County, EPA Zone 2.

Q: How much does radon mitigation cost in East Saint Louis?

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

Check local East Saint Louis radon levels and find certified testing and mitigation professionals to keep your home safe

East Saint Louis, IL Radon Facts

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

County St Clair County, IL

Zip Code 62201

Situated on the Illinois side of the St. Louis metropolitan area, East Saint Louis lies in St. Clair County where Mississippi River floodplain deposits overlay Mississippian limestone bedrock. The community's diverse housing stock across multiple zip codes (62201-62207) includes both older urban homes and newer developments with varying foundation types. Since comprehensive radon testing data is currently limited for this area, residents should prioritize professional testing to establish individual home readings.

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 East Saint Louis 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+

East Saint Louis, IL Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

Need Radon Mitigation or Testing in East Saint Louis?

100% Free, No-Obligation Quotes
Matches You with State-Licensed St Clair County Pros

1-800-299-3578 217-717-8001 (local) Toll-free · Mon–Fri 8am–6pm ET

Radon Readings Near East Saint Louis, IL

No homeowner tests have been submitted for East Saint Louis 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
Caseyville	6.1 mi	7.50 pCi/L	2
Fairview Heights	6.1 mi	9.00 pCi/L	1
Belleville	8.3 mi	7.33 pCi/L	3
Granite City	8.4 mi	8.00 pCi/L	1
Collinsville	9.1 mi	5.00 pCi/L	1
Maryville	11.2 mi	11.00 pCi/L	1
O Fallon	12.3 mi	6.00 pCi/L	1
Columbia	12.7 mi	8.00 pCi/L	4

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 East Saint Louis, IL

What EPA Radon Zone is East Saint Louis in?

East Saint Louis and the 62201 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 East Saint Louis?

No homeowner radon tests have been submitted for East Saint Louis 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 East Saint Louis 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 East Saint Louis?

Radon mitigation in East Saint Louis 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 East Saint Louis?

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.