§ 4.1 — Virginia

Radon testing in Virginia

This page lists 323 people and firms with a current radon testing credential whose official record names Virginia. Each row shows the credential number, the issuing body, and its own verification date. The latest record check on this page was October 13, 2026; other records may have been checked earlier. Source: the official file linked on each listing. Verify the number before you hire.

Latest credential check October 13, 2026. Methodology Individual record dates may be earlier. NRPP. NRSB.

Radon testingRadon mitigation

Testing listings are people credentialed to measure radon. Mitigation listings are people credentialed to install a reduction system. Some people appear on both lists when the official file says they hold both. The list is ordered by the city or county on each record. That place is where the record is filed, not a promise about where the person works.

Virginia pages here use current NRPP or NRSB certifications. City pages use the city printed on that record, not a ZIP-radius search. A national certification is not a state license in Virginia. Some states require a separate state credential to work legally. Read the methodology. Credential status can change.