Granite City, IL Radon Mitigation and Testing

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

Based on 1 user-submitted tests, the average radon level is 8.00 pCi/L.

Q: What EPA Radon Zone is Granite City in?

Granite City is in Madison County, EPA Zone 2.

Q: How much does radon mitigation cost in Granite City?

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

Avg: 8.00 pCi/L

Madison County

EPA Zone 2

1 user test

Granite City is located in Madison County, Illinois. With 1 user-submitted readings averaging 8.00 pCi/L, the area exceeds the EPA's 4.0 pCi/L action threshold, and testing is strongly recommended for homeowners in the 62040 zip code.

8.00

pCi/L average

Above EPA Action Level

Based on 1 user-submitted radon test for homes in Granite City, IL. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Granite City, IL Radon Mitigation

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

Granite City, IL Radon Testing

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

Granite City, Illinois Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
8 pCi/L	Granite City, IL	0-20 Years	Full Basement	Nov 2020

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

Granite City Radon Facts

Key details about the radon risk profile for Granite City and the 62040 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Madison County, IL

Zip Code

62040

Predicted Screening Level

2–4 pCi/L (Zone 2)

Avg. User Submitted Level

8.00 pCi/L

User Tests Submitted

Granite City and the 62040 zip code are located in Madison 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 Granite City, IL

What is the average radon level in Granite City, IL?

Based on 1 user-submitted test, the average radon level in Granite City is 8.00 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 Granite City in?

Granite City and the 62040 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.

How much does radon mitigation cost in Granite City?

Radon mitigation in Granite City 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 Granite City?

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