Certified radon testers & mitigatorsPennsylvania — mitigation — verified 29 Aug 2026

§ 4.1 — Butler County, PA

Certified radon mitigation in Butler County, PA

5 current listings from the official file. Verify the credential number before you hire.

Last verified August 29, 2026. Methodology PA DEP.

Certified radon testingCertified radon mitigation

  1. Himme, Gregory L.

    Kennihan Plumbi

    current PA DEP № 7632

    mitigation

    (724) 898-2587August 29, 2026cite ↗

  2. Kennihan Plumbing And Heating Inc

    current PA DEP № 3536

    mitigation

    (724) 898-2587August 29, 2026cite ↗

  3. Kennihan, Jerome

    Kennihan Plumbin

    current PA DEP № 7719

    mitigation

    (724) 898-2587August 29, 2026cite ↗

  4. Kennihan, William-kennihan Plumbing

    current PA DEP № 3535

    mitigation

    (724) 898-2587August 29, 2026cite ↗

  5. Tosi, Zachary C.

    Kennihan Plumbin

    current PA DEP № 7630

    mitigation

    (724) 898-2587August 29, 2026cite ↗
Fig. 4 — Butler County, PA, approximate. Pin is the county on the official file, not a street address.

Appendix A — Before you hire

  1. Who holds the credential, and can they show the same number that appears on this page?
  2. What test method or mitigation system will they use for this building?
  3. How will they document results or the finished system?

§ 4.3

Nearby places in Pennsylvania

Pennsylvania DEP certifies individuals and firms that test or mitigate radon. The people below appear as currently certified on the DEP Radon Services Directory we imported. Read the methodology. Credential status can change.