Walnut, IL Radon Mitigation and Testing

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

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

Q: What EPA Radon Zone is Walnut in?

Walnut is in Bureau County, EPA Zone 1.

Q: How much does radon mitigation cost in Walnut?

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

Bureau County

EPA Zone 1

1 user test

Situated in Bureau County along the Illinois River valley (ZIP 61376), Walnut has recorded an average radon level of 5.0 pCi/L based on initial testing data. This reading exceeds the EPA's recommended action level of 4.0 pCi/L, reflecting the area's alluvial soils over Ordovician limestone that characterize this region. Given Bureau County's variable radon conditions and the community's geological setting, all residents should prioritize radon testing and mitigation when necessary.

5.00

pCi/L average

Above EPA Action Level

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

4.0 EPA

10+

Walnut, IL Radon Mitigation

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

Walnut, IL Radon Testing

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

Walnut, Illinois Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
5 pCi/L	Walnut, IL	0-20 Years	Full Basement	Aug 2024

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

Walnut Radon Facts

Key details about the radon risk profile for Walnut and the 61376 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Bureau County, IL

Zip Code

61376

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Avg. User Submitted Level

5.00 pCi/L

User Tests Submitted

Walnut and the 61376 zip code are located in Bureau 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 Walnut, IL

What is the average radon level in Walnut, IL?

Based on 1 user-submitted test, the average radon level in Walnut 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 Walnut in?

Walnut and the 61376 zip code are in Bureau 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 Walnut?

Radon mitigation in Walnut 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 Walnut?

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