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McCusker Home Ispection Inc

Yorkville, Illinois. Testing

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

Credentials

Licenses and certifications

1 credential is on file for this business, exactly as the issuer's list printed it.

Illinois state license (1)

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
Testing licenseNo. RNI2018214Measurement ProfessionalVerified November 11, 2026Verify RNI2018214 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 Yorkville

Yorkville lies in Kendall County, where 35.0% of 3,045 radon tests reported to CDC (2017) were at or above 4 pCi/L, 1.3 points above Illinois pooled (33.7%), 50th of 70 Illinois counties with 30 or more tests.

Radon test figures for the county Yorkville lies in
CountyTestsAt or above 4 pCi/LMedianIllinois, pooledRank in the stateEPA zone
Kendall County3,04535.0%2.8 pCi/L33.7%50 of 70Zone 1

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 Yorkville

Around Kendall County, where Yorkville lies, the nearest Illinois counties with a CDC figure for 2017 run from 32.3% to 45.8% of tests at or above 4 pCi/L; the closest, Grundy County, is 21 miles away at 32.3%.

The nearest Illinois counties to Kendall County with 30 or more tests, 2017
CountyDistanceTestsAt or above 4 pCi/LMedian
Grundy County21 mi39032.3%2.4 pCi/L
Kane County24 mi8,68236.6%2.8 pCi/L
DuPage County25 mi19,40133.7%2.7 pCi/L
Will County25 mi10,77640.0%3.1 pCi/L
DeKalb County27 mi1,70741.1%3.3 pCi/L
LaSalle County29 mi1,00245.8%3.6 pCi/L

Nearby

Radon professionals nearest Yorkville

More radon professionals in YorkvilleMore radon professionals in Illinois

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