Carol Stream, IL Radon Levels

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

Based on 1 user-submitted tests, the average radon level is 6.00 pCi/L.

Q: What EPA Radon Zone is Carol Stream in?

Carol Stream is in Dupage County, EPA Zone 2.

Q: How much does radon mitigation cost in Carol Stream?

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

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

Carol Stream, IL Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)

County Dupage County, IL

Zip Code 60188

Avg. User Level 6.00 pCi/L

User Tests 1

Carol Stream in DuPage County shows an average radon level of 6.0 pCi/L, which exceeds the EPA action level of 4.0 pCi/L and requires mitigation attention. Located in the western suburbs of the Chicago metro, this 60188 zip code community sits above glacial till deposits that create favorable conditions for radon production. The area's predominantly single-family homes with full basements built between the 1950s and 1990s provide enclosed below-grade spaces where radon readily accumulates.

6.00

pCi/L average

Above EPA Action Level

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

4.0 EPA

10+

Carol Stream, IL Radon Mitigation

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

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Carol Stream, Illinois Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
6 pCi/L	Carol Stream, IL	21-50 Years	Partial Basement	Dec 2020

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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 Carol Stream, IL

What is the average radon level in Carol Stream, IL?

Based on 1 user-submitted test, the average radon level in Carol Stream is 6.00 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 Carol Stream in?

Carol Stream and the 60188 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 Carol Stream?

Radon mitigation in Carol Stream 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 Carol Stream?

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.

Radon Levels Near Carol Stream, IL

User-submitted radon levels from the cities closest to Carol Stream with recorded test data. Explore nearby communities to compare local readings.

City	Distance	Avg User Level	Submissions
Wheaton	1.7 mi	4.00 pCi/L	1
Winfield	2.0 mi	5.75 pCi/L	4
Glen Ellyn	2.6 mi	9.00 pCi/L	3
Glendale Heights	3.4 mi	11.00 pCi/L	1
Lombard	5.0 mi	6.25 pCi/L	4
Warrenville	5.4 mi	10.50 pCi/L	2
Lisle	6.5 mi	7.25 pCi/L	4
Addison	6.7 mi	4.00 pCi/L	1