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

§ 4.1 — Maryville, IL

Certified radon testing in Maryville, IL

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

Last verified August 29, 2026. Methodology IL IEMA.

Certified radon testingCertified radon mitigation

  1. Coroleuski, Anna

    Radon Safety Squad, Inc.

    current IL IEMA № RNIT20231847

    testing

    618-667-2366August 29, 2026cite ↗

  2. Haffer, Rodney

    Radon Safety Squad, Inc.

    current IL IEMA № RNIT2022223

    testing

    618-667-2366August 29, 2026cite ↗

  3. Lucas, Daniel

    Radon Safety Squad, Inc.

    current IL IEMA № RNIT20253288

    testing

    618-667-2366August 29, 2026cite ↗

  4. Obrecht Jr., Stanley

    Radon Safety Squad, Inc.

    current IL IEMA № RNIT2014219

    testing

    618-667-2366August 29, 2026cite ↗

  5. Obrecht, Erika

    Radon Safety Squad, Inc.

    current IL IEMA № RNI2014230

    testing

    618-667-2366August 29, 2026cite ↗
Fig. 4 — Maryville, IL, 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 Illinois

Illinois IEMA licenses radon measurement and mitigation professionals and technicians. The people below appear on the active licensee listing we imported. Read the methodology. Credential status can change.