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InspectingPro.com

Alton, Illinois. Testing

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

Call InspectingPro.com at (730) 230-8642

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. RNI20252959Measurement ProfessionalVerified November 11, 2026Verify RNI20252959 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 Alton

Alton lies in Madison County, where 29.5% of 5,214 radon tests reported to CDC (2017) were at or above 4 pCi/L, 4.2 points below Illinois pooled (33.7%), 58th of 70 Illinois counties with 30 or more tests.

Radon test figures for the county Alton lies in
CountyTestsAt or above 4 pCi/LMedianIllinois, pooledRank in the stateEPA zone
Madison County5,21429.5%2.6 pCi/L33.7%58 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 Alton

Around Madison County, where Alton lies, the nearest Illinois counties with a CDC figure for 2017 run from 25.6% to 46.5% of tests at or above 4 pCi/L; the closest, St. Clair County, is 25 miles away at 33.7%.

The nearest Illinois counties to Madison County with 30 or more tests, 2017
CountyDistanceTestsAt or above 4 pCi/LMedian
St. Clair County25 mi5,19333.7%2.6 pCi/L
Bond County26 mi7532.0%2.6 pCi/L
Macoupin County30 mi25825.6%2.2 pCi/L
Jersey County30 mi12946.5%3.6 pCi/L
Clinton County30 mi58237.6%3.0 pCi/L
Montgomery County36 mi12343.9%3.3 pCi/L

Nearby

Radon professionals nearest Alton

More radon professionals in AltonMore radon professionals in Illinois

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