Stillman Valley, IL Radon Mitigation and Testing

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

Based on 1 user-submitted tests, the average radon level is 5.00 pCi/L.

Q: What EPA Radon Zone is Stillman Valley in?

Stillman Valley is in Ogle County, EPA Zone 1.

Q: How much does radon mitigation cost in Stillman Valley?

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

Avg: 5.00 pCi/L

Ogle County

EPA Zone 1

1 user test

Stillman Valley is located in Ogle County, Illinois. With 1 user-submitted readings averaging 5.00 pCi/L, the area exceeds the EPA's 4.0 pCi/L action threshold, and testing is strongly recommended for homeowners in the 61084 zip code.

5.00

pCi/L average

Above EPA Action Level

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

4.0 EPA

10+

Stillman Valley, IL Radon Mitigation

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

Stillman Valley, IL Radon Testing

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

Stillman Valley, Illinois Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
5 pCi/L	Stillman Valley, IL	0-20 Years	Full Basement	Nov 2018

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

Stillman Valley Radon Facts

Key details about the radon risk profile for Stillman Valley and the 61084 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Ogle County, IL

Zip Code

61084

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Avg. User Submitted Level

5.00 pCi/L

User Tests Submitted

Stillman Valley and the 61084 zip code are located in Ogle 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 Stillman Valley, IL

What is the average radon level in Stillman Valley, IL?

Based on 1 user-submitted test, the average radon level in Stillman Valley is 5.00 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 Stillman Valley in?

Stillman Valley and the 61084 zip code are in Ogle 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 Stillman Valley?

Radon mitigation in Stillman Valley 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 Stillman Valley?

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