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Warrenville, IL Radon Levels

Check local Warrenville radon levels and find certified testing and mitigation professionals to keep your home safe


Warrenville, IL Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)
County Dupage County, IL
Zip Code 60555
Avg. User Level 10.50 pCi/L
User Tests 2

This DuPage County community in the western Chicago Metro suburbs has recorded an average radon level of 10.0 pCi/L, well above the EPA action threshold. Located in ZIP code 60555, Warrenville sits on glacial till deposits from the Wisconsin glaciation that create highly favorable conditions for radon production and migration. Given this significantly elevated reading, homeowners should prioritize radon testing and mitigation in their predominantly basement-equipped suburban homes.

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.

0
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.

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Warrenville, IL Radon Levels

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

Radon LevelCityHome AgeFoundation
11 pCi/L Warrenville, IL 51-99 Years Full Basement
10 pCi/L Warrenville, IL 100+ Years Full Basement

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

Radon Readings Near Warrenville, IL

Compare radon levels in Warrenville with the closest nearby cities that have user-submitted test data.

CityDistanceAvg User LevelReadings
Winfield 3.8 mi 5.75 pCi/L 4
Wheaton 5.1 mi 4.00 pCi/L 1
Carol Stream 5.4 mi 6.00 pCi/L 1
Naperville 5.8 mi 6.25 pCi/L 4
Lisle 6.1 mi 7.25 pCi/L 4
Aurora 6.7 mi 6.75 pCi/L 4
Glen Ellyn 7.1 mi 9.00 pCi/L 3
North Aurora 7.1 mi 7.00 pCi/L 2

Dupage County Radon Profile

EPA mapping assigns Dupage County to Radon Zone 2, indicating moderate predicted indoor screening levels in the 2 to 4 pCi/L range based on regional geology. Homeowner-submitted tests from 25 cities in Dupage County average 6.98 pCi/L across 45 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. As the second leading cause of lung cancer in the U.S., radon warrants testing in every Dupage County home regardless of zone or a neighbor's results.

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.