Gill Group
Dexter, MO
Listed for: Testing
Verified:Iowa state license+4 more: Illinois state license, Kansas state license, Minnesota state license, Ohio state license
ProfessionalsBusiness profile
St. Louis Radon Test and Mitigation, LLC
Saint Louis, Missouri. Testing and mitigation
2 Illinois state licenses verified against the Illinois Emergency Management Agency (IEMA) list, last checked November 11, 2026.
Credentials
Licenses and certifications
2 credentials are on file for this business, each exactly as the issuer's list printed it.
These are Illinois licenses, and the business address is in Missouri.
Radon411 has no Missouri record for this business. Before hiring it for a home in Missouri, check what Missouri asks for. What Missouri requires
Illinois state licenses (2)
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.
| License | Number | Status on the list | Verified | Check with the issuer |
|---|---|---|---|---|
| Mitigation license | No. RNM2016210 | Mitigation Professional | Verified November 11, 2026 | Verify RNM2016210 with the Illinois Emergency Management Agency (IEMA) (opens in a new tab) |
| Testing license | No. RNI2016230 | Measurement Professional | Verified November 11, 2026 | Verify RNI2016230 with the Illinois Emergency Management Agency (IEMA) (opens in a new tab) |
Licensing in Missouri
Ask Missouri Radon Program what it requires before you hire.
Missouri Radon Program, Missouri Department of Health and Senior Services, 573-751-6102.
What Missouri requires, in its program’s own words, and how to check a credential
Local radon figures
Radon in Saint Louis
Saint Louis lies in St. Louis city, where 16.9% of 1,873 radon tests reported to CDC (2008 to 2017, laboratory) were at or above 4 pCi/L, 13.7 points below Missouri pooled (30.6%), 66th of 72 Missouri counties with 30 or more tests.
Shares of tests people chose to run and report, by county (2008 to 2017, laboratory); the state's is its counties' counts added up, calculated by Radon411. Only a test measures a home.
The counties around Saint Louis
Around St. Louis city, where Saint Louis lies, the nearest Missouri counties with a CDC figure for 2008 to 2017, laboratory run from 26.3% to 41.6% of tests at or above 4 pCi/L; the closest, St. Louis County, is 11 miles away at 26.3%.
Nearby
Radon professionals nearest Saint Louis
- View profile for Gill Group
- View profile for Radon Pros
Radon Pros
Odessa, MO
Listed for: TestingMitigation
Verified:Kansas state license
No phone or website on the list. Licenses on the profile. Listed for: Testing
Verified:Iowa state license+1 more: Kansas state license
- View profile for Barnett Real Estate Inspection, LLC
Barnett Real Estate Inspection, LLC
Grain Valley, MO
Listed for: Testing
Verified:Kansas state license
No phone or website on the list. Licenses on the profile. - View profile for Just In Time Inspection Services INC
Just In Time Inspection Services INC
Grandview, MO
Listed for: Testing
Verified:Kansas state license
No phone or website on the list. Licenses on the profile. Listed for: TestingMitigation
Verified:Kansas state license
No phone or website on the list. Licenses on the profile.
More radon professionals in Saint LouisMore radon professionals in Missouri
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