Radon Mitigation in DuPage County, IL
High radon result? We connect DuPage homeowners with independent, IEMA-licensed mitigation contractors. Free, no obligation.
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Radon is an odorless radioactive gas that seeps up from soil into basements. The U.S. EPA calls it the leading cause of lung cancer among non-smokers and recommends fixing a home when a test shows 4 pCi/L or higher (and considering it between 2 and 4 pCi/L). Northern Illinois soils commonly produce elevated readings, and IEMA publishes county test data showing DuPage is no exception.
How it works
- Tell us about your home in the short quote form.
- We pass your request to an independent local radon mitigation contractor who holds a current IEMA radon mitigation license.
- The contractor contacts you, inspects and gives you a written quote. You decide — there's no obligation and our service is free.
Why licensing matters in Illinois
Illinois is one of the states that licenses radon work. Under the state's radon licensing rules (32 Ill. Adm. Code Part 422), anyone who installs a mitigation system for pay must hold an IEMA mitigation license. Before you sign anything, look the contractor up on IEMA's county list — it takes about a minute.
What a typical DuPage system looks like
Most DuPage homes have poured basements or slab-on-grade additions, so the usual fix is sub-slab depressurization: a sealed PVC pipe draws soil gas from under the floor and a fan vents it above the roofline. EPA notes these systems commonly bring levels below 4 pCi/L, and you should re-test after installation to confirm.
Selling or buying?
The Illinois Radon Awareness Act requires sellers to disclose known radon test results and hand buyers the state's radon pamphlet. If an inspection came back high, a licensed mitigator can usually schedule quickly — ask about post-mitigation testing before closing.
DuPage towns we cover
Wheaton
County seat with many older basement homes north and south of downtown.
Downers Grove
Mix of split-levels and basements — each layout changes the system design.
Elmhurst
Older housing stock and lots of teardown rebuilds on the east side of the county.
Lombard
Lots of 1950s–70s ranches and raised ranches with full basements.
Glen Ellyn
Historic homes near Lake Ellyn and newer homes south of Roosevelt.
Lisle
Townhomes and single-family homes — shared walls need special attention.
Common questions
What radon level should I fix?
EPA recommends fixing your home if a test shows 4 pCi/L or more and suggests considering it between 2 and 4 pCi/L, since there is no known safe level.
Do I need a licensed contractor in Illinois?
Yes. Illinois requires radon mitigation work done for pay to be performed by an IEMA-licensed mitigation professional. You can verify licenses on IEMA's website.
How long does installation take?
Most single-family systems are installed in a day; the contractor should then re-test to confirm the level dropped.