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Radon Reduction Systems, Inc.

Naperville, Illinois. Mitigation

3 Illinois state licenses verified against the Illinois Emergency Management Agency (IEMA) list, last checked November 11, 2026.

Call Radon Reduction Systems, Inc. at (630) 357-9474

Credentials

Licenses and certifications

3 credentials are on file for this business, each exactly as the issuer's list printed it.

Illinois state licenses (3)

Issued by the Illinois Emergency Management Agency (IEMA), not by NRPP or NRSB. Radon411 last checked the list on November 11, 2026. No expiry date is on the record.

LicenseNumberStatus on the listVerifiedCheck with the issuer
Mitigation licenseNo. RNM98124Mitigation ProfessionalVerified November 11, 2026Verify RNM98124 with the Illinois Emergency Management Agency (IEMA) (opens in a new tab)
Mitigation licenseNo. RNMT2017208Mitigation TechnicianVerified November 11, 2026Verify RNMT2017208 with the Illinois Emergency Management Agency (IEMA) (opens in a new tab)
Mitigation licenseNo. RNMT20263609Mitigation TechnicianVerified November 11, 2026Verify RNMT20263609 with the Illinois Emergency Management Agency (IEMA) (opens in a new tab)

Licensing in Illinois

Illinois's radon program says the state licenses or certifies radon professionals.

IEMA-OHS Radon Program, Illinois Emergency Management Agency and Office of Homeland Security, (800) 325-1245.

What Illinois requires, in its program’s own words, and how to check a credential

Local radon figures

Radon in Naperville

Naperville lies mostly in DuPage County, where 33.7% of 19,401 radon tests reported to CDC (2017) were at or above 4 pCi/L, 0.0 points below Illinois pooled (33.7%), 53rd of 70 Illinois counties with 30 or more tests.

Radon test figures for the counties Naperville lies in
CountyShare of NapervilleTestsAt or above 4 pCi/LMedianIllinois, pooledRank in the stateEPA zone
DuPage County65.6%19,40133.7%2.7 pCi/L33.7%53 of 70Zone 2
Will County34.4%10,77640.0%3.1 pCi/L33.7%42 of 70Zone 2

Shares of tests people chose to run and report, by county (2017); the state's is its counties' counts added up, calculated by Radon411. Only a test measures a home.

The counties around Naperville

Around DuPage County, one of the counties Naperville lies in, the nearest Illinois counties with a CDC figure for 2017 run from 19.4% to 41.1% of tests at or above 4 pCi/L; the closest, Cook County, is 14 miles away at 19.4%.

The nearest Illinois counties to DuPage County with 30 or more tests, 2017
CountyDistanceTestsAt or above 4 pCi/LMedian
Cook County14 mi26,93719.4%1.9 pCi/L
Kane County19 mi8,68236.6%2.8 pCi/L
Kendall County25 mi3,04535.0%2.8 pCi/L
Lake County33 mi13,05027.4%2.4 pCi/L
DeKalb County35 mi1,70741.1%3.3 pCi/L
McHenry County38 mi6,47435.1%2.9 pCi/L

Nearby

Other radon professionals in Naperville

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