Illinois City, IL Radon Mitigation and Testing

Q: What EPA Radon Zone is Illinois City in?

Illinois City is in Rock Island County, EPA Zone 1.

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

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

Rock Island County

EPA Zone 1

Situated along the Mississippi River in Rock Island County, Illinois City sits on river valley alluvial soils combined with underlying Ordovician limestone that creates variable radon conditions. Testing data for zip code 61259 remains limited, making professional assessment crucial for homeowners. The area's proximity to limestone bluffs and variable soil conditions can produce significantly different radon levels from one property to another.

Illinois City, IL Radon Mitigation

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

Illinois City, IL Radon Testing

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

Illinois City Radon Facts

Key details about the radon risk profile for Illinois City and the 61259 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Rock Island County, IL

Zip Code

61259

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Illinois City and the 61259 zip code are located in Rock Island County, which has an EPA assigned Radon Zone of 1. A radon zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Illinois City, IL

What EPA Radon Zone is Illinois City in?

Illinois City and the 61259 zip code are in Rock Island County, which has an EPA assigned Radon Zone of 1. A zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L.

How much does radon mitigation cost in Illinois City?

Radon mitigation in Illinois 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 Illinois 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