Radon Testing CompaniesPennsylvania — testing
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§ 4.1 — Philadelphia County, PA

Radon testing in Philadelphia County, PA

This page lists 16 people and firms with a current radon testing credential whose official record names Philadelphia County, PA. Each row shows the credential number, the issuing body, and its own verification date. The latest record check on this page was August 29, 2026; other records may have been checked earlier. Source: PA DEP. Verify the number before you hire.

Latest credential check August 29, 2026. Methodology Individual record dates may be earlier. PA DEP.

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 pages when the official file says they hold both.

  1. Augustine, Branden-eagle Inspection

    current PA DEP № 9138

    testing

    (267) 538-2292August 29, 2026cite ↗

  2. Baltrush, Michael

    Valueguard Usa,

    current PA DEP № 9053

    testing

    (215) 860-3150August 29, 2026cite ↗

  3. Borkowski, Patrick

    current PA DEP № 2497

    testing

    (888) 927-3944August 29, 2026cite ↗

  4. Dunn, Jr., William

    current PA DEP № 3374

    testing

    (215) 284-1737August 29, 2026cite ↗

  5. Gilger, Tyler

    Valueguard Usa, Inc

    current PA DEP № 9030

    testing

    (215) 860-3150August 29, 2026cite ↗

  6. Labar, James

    current PA DEP № 3756

    testing

    (610) 909-3649August 29, 2026cite ↗

  7. Lampe, Bruce D.

    current PA DEP № 2188

    testing

    (215) 632-4220August 29, 2026cite ↗

  8. Lerro, Joseph

    Geo Environmental

    current PA DEP № 8701

    testing

    (215) 778-7118August 29, 2026cite ↗

  9. Maralado, Matt

    Valueguard Usa Inc

    current PA DEP № 8788

    testing

    (215) 860-3150August 29, 2026cite ↗

  10. Mazzio, Michael

    current PA DEP № 3677

    testing

    (215) 280-5473August 29, 2026cite ↗

  11. Millard, Chase

    Valueguard Usa Inc

    current PA DEP № 2740

    testing

    (215) 860-3150August 29, 2026cite ↗

  12. Royer, James

    Valueguard Usa, Inc

    current PA DEP № 9031

    testing

    (215) 860-3150August 29, 2026cite ↗

  13. Serrano, Moises

    current PA DEP № 3746

    testing

    (215) 800-9528August 29, 2026cite ↗

  14. Shalaway, Cory

    Valueguard Usa Inc

    current PA DEP № 9016

    testing

    (215) 860-3150August 29, 2026cite ↗

  15. Valueguard Usa, Inc.

    current PA DEP № 1910

    testing

    (215) 860-3150August 29, 2026cite ↗

  16. Yeager, Joseph

    current PA DEP № 3503

    testing

    (215) 205-4453August 29, 2026cite ↗
Fig. 4 — 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 Philadelphia County, PA?

Open the source link on this page and match the name and credential number to PA DEP. Status can change after a record’s verification date. The latest record check on this page was August 29, 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 August 29, 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

§ 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.