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§ 4.1 — Plainfield, IL

Radon testing in Plainfield, IL

This page lists 13 people and firms with a current radon testing credential whose official record names Plainfield, IL. 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: IL IEMA. Verify the number before you hire.

Latest credential check October 13, 2026. Methodology Individual record dates may be earlier. IL IEMA.

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. Bak, Kyle

    Reliable Radon Inspections, Inc

    current IL IEMA № RNIT20242421

    testing

    877-997-2366October 13, 2026cite ↗

  2. Burns, Sean

    Professional Radon Systems

    current IL IEMA № RNI20242354

    testing

    630-236-4200October 13, 2026cite ↗

  3. Dinsick, David

    Discover Llc

    current IL IEMA № RNI2016201

    testing

    866-750-3456October 13, 2026cite ↗

  4. Dinsick, Margaret

    Discover Llc

    current IL IEMA № RNIT2019229

    testing

    866-750-3456October 13, 2026cite ↗

  5. East, James

    Reliable Radon Inspections, Inc

    current IL IEMA № RNI2008222

    testing

    877-997-2366October 13, 2026cite ↗

  6. Kampf, Shannon

    Alphal Radon Testing

    current IL IEMA № RNI20253221

    testing

    815-953-2226October 13, 2026cite ↗

  7. Keagle, Samantha

    Sam's Professional Radon Testing

    current IL IEMA № RNI2020213

    testing

    815-685-6745October 13, 2026cite ↗

  8. Kokenes, Mike

    Reliable Radon Inspections, Inc

    current IL IEMA № RNIT2011209

    testing

    877-997-2366October 13, 2026cite ↗

  9. Kulikowski, Mariusz

    Mk Radon Specialists

    current IL IEMA № RNI2020208

    testing

    815-666-8002October 13, 2026cite ↗

  10. Motrysku, Yana

    Discover Llc

    current IL IEMA № RNIT20263468

    testing

    866-750-3456October 13, 2026cite ↗

  11. Nicholson, Kelli

    Healthy Air Radon Testing

    current IL IEMA № RNI2021229

    testing

    630-601-3130October 13, 2026cite ↗

  12. Rojek, Mark

    Rojek Home Services

    current IL IEMA № RNI2022210

    testing

    815-255-4988October 13, 2026cite ↗

  13. Savage, Michael

    Mjs Inspections, Inc

    current IL IEMA № RNI2007214

    testing

    847-417-3227October 13, 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 Plainfield, IL?

Open the source link on this page and match the name and credential number to IL IEMA. 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

§ 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.