Listed for: Testing
Verified:Ohio state license
ProfessionalsBusiness profile
Williams Inspection Services, LLC
Winchester, Virginia. Mitigation
1 West Virginia state license verified against the West Virginia Office of Environmental Health Services, Radiation, Toxics and Indoor Air Division list, last checked November 3, 2026.
Credentials
Licenses and certifications
1 credential is on file for this business, exactly as the issuer's list printed it.
These are West Virginia licenses, and the business address is in Virginia.
Radon411 has no Virginia record for this business. Before hiring it for a home in Virginia, check what Virginia asks for. What Virginia requires
West Virginia state license (1)
Issued by the West Virginia Office of Environmental Health Services, Radiation, Toxics and Indoor Air Division, not by NRPP or NRSB. Radon411 last checked the list on November 3, 2026.
| License | Number | Status on the list | Expires | Verified | Check with the issuer |
|---|---|---|---|---|---|
| Mitigation license | No. RC000220 | West Virginia Radon Contractor | Expires August 31, 2027 | Verified November 3, 2026 | Verify RC000220 with the West Virginia Office of Environmental Health Services, Radiation, Toxics and Indoor Air Division (opens in a new tab) |
Licensing in Virginia
Virginia's radon program speaks to credentials without a plain yes or no.
VDH Radon Program, (804) 864-8161.
What Virginia requires, in its program’s own words, and how to check a credential
Local radon figures
Radon in Winchester
Winchester lies in Winchester city, where 44.8% of 773 radon tests reported to CDC (2008 to 2017, laboratory) were at or above 4 pCi/L, 14.4 points above Virginia pooled (30.4%), 17th of 84 Virginia 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 Winchester
Around Winchester city, where Winchester lies, the nearest Virginia counties with a CDC figure for 2008 to 2017, laboratory run from 27.4% to 47.7% of tests at or above 4 pCi/L; the closest, Frederick County, is 5 miles away at 44.1%.
Nearby
Radon professionals nearest Winchester
More radon professionals in WinchesterMore radon professionals in Virginia
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