Radon Testing CompaniesSouth Carolina — testing
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§ 4.1 — South Carolina

Radon testing in South Carolina

This page lists 15 people and firms with a current radon testing credential whose official record names South Carolina. 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.

15 listings. Type to narrow the list.

  1. John Nyvall

    S&me

    current NRPP № 111496

    testing, Boiling Springs

    (864) 590-8013October 3, 2026cite ↗

  2. Bradford H. Johnson

    Absolute Inspection Service Llc

    current NRPP № 105207

    testing, Campobello

    (864) 580-3547October 13, 2026cite ↗

  3. Kelly C Jones

    Cherokee Federal

    current NRPP № 114706

    testing, Charleston

    (518) 491-5988October 13, 2026cite ↗

  4. Patrick Young

    Patriot Inspections, Llc

    current NRPP № 113516

    testing, Chester

    (803) 374-1539October 13, 2026cite ↗

  5. Daniel Matz

    Bunnell-lammons Engineering, Inc.

    current NRPP № 115778

    testing, Greenville

    (864) 288-1265October 13, 2026cite ↗

  6. Matthew Guthrie

    Ecs Southeast, Llc

    current NRPP № 114598

    testing, Greenville

    (864) 665-3010October 13, 2026cite ↗

  7. Merritt Gantt

    True Air Technologies, Llc

    current NRPP № 110722

    testing, Greer

    (803) 461-5664October 3, 2026cite ↗

  8. Emory R Young

    Environmental Services Of The Carolinas, Inc.

    current NRPP № 115111

    testing, Lyman

    (864) 363-6057October 13, 2026cite ↗

  9. Ralph Quin

    Quin Company

    current NRPP № 103132

    testing, Mauldin

    (864) 201-3021October 13, 2026cite ↗

  10. Kurt A Brickner

    Sherlock Homes Ps, Llc

    current NRPP № 107585

    testing, Moncks Corner

    (419) 957-2422October 13, 2026cite ↗

  11. Richard F. Pezzino

    Accu-view Property Inspections, Inc

    current NRSB № RMS-1SS0032

    testing, Mt. Pleasant

    September 30, 2026cite ↗

  12. John A O'neil

    Ecs Southeast, Llp

    current NRPP № 112684

    testing, Rock Hill

    (571) 510-5595October 3, 2026cite ↗

  13. Jadrian Brewton

    Trinity Residencial Inspectors

    current NRPP № 112882

    testing, Roebuck

    (864) 504-1800October 13, 2026cite ↗

  14. Dakota Callahan

    Greenville Radon Specialist

    current NRPP № 114367

    testing, Simpsonville

    (864) 416-1721October 13, 2026cite ↗

  15. Christopher L Hayward

    All About Radon Llc

    current NRPP № 115496

    testing, Taylors

    (864) 884-8881October 13, 2026cite ↗
Fig. 4 — 14 of 15 listings have a mappable place. Each pin is a current listing at the Census city or county centroid on the file, approximate. Pins that share a place are spread so you can click them. Not street addresses.

Appendix A

Questions before you hire

How do I verify a radon credential listed for South Carolina?

Open the source link on this page and match the name and credential number to the official file. Status can change after a record’s verification date. The latest record check on this page was October 13, 2026; check each record’s date. If the official page disagrees with this directory, trust the official page. We do not invent credential numbers.

Does EPA certify radon contractors?

The U.S. EPA does not certify radon contractors. EPA publishes guidance on finding a qualified radon service provider and points to state programs and national certifications. This directory is not affiliated with EPA. We do not display EPA-certified badges.

What does last verified mean on this page?

Last verified on an individual record is the date we checked its official source. The latest credential check on this page was October 13, 2026; other records may have earlier dates. We refresh the roster monthly. Current means the person appeared as currently credentialed on the source at that record’s verification date. Credentials can expire between refreshes, so follow the source link.

Appendix A.2

Before you hire

  1. Ask who holds the credential printed on this page, and ask them to show the same number. Some firms employ several credentialed people. The listing is the person or firm on the official file, not whoever answers the phone.
  2. Ask what test method or mitigation system they will use for this building. A credential is not a work plan. Testing and mitigation are separate services here, and a person appears on both lists only when the official file says they hold both.
  3. Ask how they will document test results or the finished mitigation system. Keep that document with the credential number you verified. This directory does not score jobs, publish reviews, or collect quotes.

The full checklist: Certified radon tester: what they do and how to hire one

South Carolina 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 South Carolina. Some states require a separate state credential to work legally. Read the methodology. Credential status can change.