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 October 4, 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 October 4, 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 October 4, 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; its words are below.
The Code of Virginia requires that Radon testers and mitigators be currently certified by either the National Radon Proficiency Program (NRPP) or the National Radon Safety Board (NRSB).
VDH Radon Program
Virginia Department of Health
Its page covers free or discounted test kits and who may test and fix radon in the state.
Phone (804) 864-8161 · Email Radon@vdh.virginia.gov
Visit the program's page (opens in a new tab)Read October 3, 2026
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