Warrenville, IL Radon Mitigation and Testing

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

Based on 2 user-submitted tests, the average radon level is 10.50 pCi/L.

Q: What EPA Radon Zone is Warrenville in?

Warrenville is in Dupage County, EPA Zone 2.

Q: How much does radon mitigation cost in Warrenville?

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

Avg: 10.50 pCi/L

Dupage County

EPA Zone 2

2 user tests

Warrenville is located in Dupage County, Illinois. With 2 user-submitted readings averaging 10.50 pCi/L, the area exceeds the EPA's 4.0 pCi/L action threshold, and testing is strongly recommended for homeowners in the 60555 zip code.

10.50

pCi/L average

Above EPA Action Level

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

4.0 EPA

10+

Warrenville, IL Radon Mitigation

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

Warrenville, IL Radon Testing

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

Warrenville, Illinois Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
11 pCi/L	Warrenville, IL	51-99 Years	Full Basement	Feb 2026
10 pCi/L	Warrenville, IL	100+ Years	Full Basement	Aug 2017

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

Warrenville Radon Facts

Key details about the radon risk profile for Warrenville and the 60555 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Dupage County, IL

Zip Code

60555

Predicted Screening Level

2–4 pCi/L (Zone 2)

Avg. User Submitted Level

10.50 pCi/L

User Tests Submitted

Warrenville and the 60555 zip code are located in Dupage 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 Warrenville, IL

What is the average radon level in Warrenville, IL?

Based on 2 user-submitted tests, the average radon level in Warrenville is 10.50 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 Warrenville in?

Warrenville and the 60555 zip code are in Dupage 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 Warrenville?

Radon mitigation in Warrenville 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 Warrenville?

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