Caseyville, IL Radon Mitigation and Testing

Q: What is the average radon level in Caseyville, IL?

Based on 2 user-submitted tests, the average radon level is 7.50 pCi/L.

Q: What EPA Radon Zone is Caseyville in?

Caseyville is in St Clair County, EPA Zone 2.

Q: How much does radon mitigation cost in Caseyville?

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

Avg: 7.50 pCi/L

St Clair County

EPA Zone 2

2 user tests

Caseyville is located in St Clair County, Illinois. With 2 user-submitted readings averaging 7.50 pCi/L, the area exceeds the EPA's 4.0 pCi/L action threshold, and testing is strongly recommended for homeowners in the 62232 zip code.

7.50

pCi/L average

Above EPA Action Level

Based on 2 user-submitted radon tests for homes in Caseyville, IL. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Caseyville, IL Radon Mitigation

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

Caseyville, IL Radon Testing

Finding qualified radon testing professionals is the first step toward protecting your home.

Caseyville, Illinois Radon Levels

User-submitted radon test readings from homes in the Caseyville area.

Radon Level	City	Home Age	Foundation	Submitted
4 pCi/L	Caseyville, IL	51-99 Years	Full Basement	Aug 2021
11 pCi/L	Caseyville, IL	0-20 Years	Full Basement	May 2016

Have a radon test result for Caseyville? Submit your reading to help other homeowners.

Caseyville Radon Facts

Key details about the radon risk profile for Caseyville and the 62232 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

St Clair County, IL

Zip Code

62232

Predicted Screening Level

2–4 pCi/L (Zone 2)

Avg. User Submitted Level

7.50 pCi/L

User Tests Submitted

Caseyville and the 62232 zip code are located in St Clair County, which has an EPA assigned Radon Zone of 2. A radon zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Caseyville, IL

What is the average radon level in Caseyville, IL?

Based on 2 user-submitted tests, the average radon level in Caseyville is 7.50 pCi/L. This exceeds the EPA's recommended action level of 4.0 pCi/L, and radon testing is recommended for all homes in the area.

What EPA Radon Zone is Caseyville in?

Caseyville and the 62232 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.

How much does radon mitigation cost in Caseyville?

Radon mitigation in Caseyville 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 Caseyville?

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.

Most Active Radon Markets in Illinois

Cities with the most user-submitted radon test data in the state.

City	Avg User Radon Level	Submissions
Buffalo Grove	6.10 pCi/L	10
Crystal Lake	7.25 pCi/L	8
Lake Zurich	6.00 pCi/L	7
Grayslake	5.00 pCi/L	7
New Lenox	10.17 pCi/L	6
Park Ridge	7.00 pCi/L	6
Arlington Heights	6.17 pCi/L	6
Waterloo	9.20 pCi/L	5
Palatine	7.80 pCi/L	5
Round Lake	7.80 pCi/L	5
Northbrook	6.20 pCi/L	5
Mchenry	11.00 pCi/L	4
Dekalb	8.75 pCi/L	4
Columbia	8.00 pCi/L	4
Lisle	7.25 pCi/L	4
Normal	7.25 pCi/L	4
Antioch	7.00 pCi/L	4
Elk Grove Village	7.00 pCi/L	4
Aurora	6.75 pCi/L	4
Hoffman Estates	6.75 pCi/L	4