Certified radon testers & mitigatorsMaine — testing — verified 29 Aug 2026

§ 4.1 — South Portland, ME

Certified radon testing in South Portland, ME

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

Last verified August 29, 2026. Methodology ME DHHS.

Certified radon testingCertified radon mitigation

  1. Harborlight Property Inspections, Llc

    Harborlight Property Inspections, Llc

    current ME DHHS № SMC507

    testing

    August 29, 2026cite ↗

  2. South Portland Housing Authority

    South Portland Housing Authority

    current ME DHHS № SPC269

    testing

    August 29, 2026cite ↗
Fig. 4 — South Portland, ME, approximate. Pin is the city 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 Maine

Maine DHHS registers radon service-provider companies. The firms below appear as Active on the official ALMS company search we imported (Test air and Portable lab as testing; Mitigate air as mitigation). Stationary laboratories and supervised employees are not listed here. Read the methodology. Credential status can change.