Skip to content
RADON411

ProfessionalsBusiness profile

Radon Safety Squad, Inc.

Maryville, Illinois. Testing

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

Call Radon Safety Squad, Inc. at (618) 667-2366

Credentials

Licenses and certifications

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

Illinois state licenses (7)

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. RNI2014230Measurement ProfessionalVerified November 11, 2026Verify RNI2014230 with the Illinois Emergency Management Agency (IEMA) (opens in a new tab)
Testing licenseNo. RNI20253199Measurement ProfessionalVerified November 11, 2026Verify RNI20253199 with the Illinois Emergency Management Agency (IEMA) (opens in a new tab)
Testing licenseNo. RNIT2014219Measurement TechnicianVerified November 11, 2026Verify RNIT2014219 with the Illinois Emergency Management Agency (IEMA) (opens in a new tab)
Testing licenseNo. RNIT2022223Measurement TechnicianVerified November 11, 2026Verify RNIT2022223 with the Illinois Emergency Management Agency (IEMA) (opens in a new tab)
Testing licenseNo. RNIT20231847Measurement TechnicianVerified November 11, 2026Verify RNIT20231847 with the Illinois Emergency Management Agency (IEMA) (opens in a new tab)
Testing licenseNo. RNIT20253288Measurement TechnicianVerified November 11, 2026Verify RNIT20253288 with the Illinois Emergency Management Agency (IEMA) (opens in a new tab)
Testing licenseNo. RNIT20263704Measurement TechnicianVerified November 11, 2026Verify RNIT20263704 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 Maryville

Maryville 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 Maryville 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 Maryville

Around Madison County, where Maryville 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 Maryville

More radon professionals in MaryvilleMore radon professionals in Illinois

Is this your business?