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§ 4.1 — Johnson County, KS

Radon mitigation in Johnson County, KS

This page lists 9 people and firms with a current radon mitigation credential whose official record names Johnson County, KS. 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: KS KDHE. Verify the number before you hire.

Latest credential check August 29, 2026. Methodology Individual record dates may be earlier. KS KDHE.

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. Connell, James

    A1 Healthy Homes

    current KS KDHE № KS-MS-0218 / KS-MI-0078

    mitigation, testing

    913-660-6550August 29, 2026cite ↗

  2. Demuth, Donald

    Midwest Radon (aqp Inc)

    current KS KDHE № KS-MS-0597 / KS-MI-0245

    mitigation, testing

    9137802000August 29, 2026cite ↗

  3. Hodgden, Gary

    Midwest Radon (aqp Inc)

    current KS KDHE № KS-MS-0067 / KS-MI-0019

    mitigation, testing

    913-780-2000August 29, 2026cite ↗

  4. Hodgden, Wesley

    Midwest Radon (aqp Inc)

    current KS KDHE № KS-MS-0115 / KS-MI-0035

    mitigation, testing

    913-780-2000August 29, 2026cite ↗

  5. Kubas, Michael

    Mid America Radon

    current KS KDHE № KS-MS-0118 / KS-MI-0038

    mitigation, testing

    913-469-1997August 29, 2026cite ↗

  6. Mantych, Jason

    Clear Conscience Radon Llc

    current KS KDHE № KS-MS-0339 / KS-MI-0125

    mitigation, testing

    8166516123August 29, 2026cite ↗

  7. Sadler, Christopher

    All About Radon / Kc Radon Solutions

    current KS KDHE № KS-MS-0352 / KS-MI-0133

    mitigation, testing

    913-481-7840August 29, 2026cite ↗

  8. Thompson, Andrew

    Midwest Radon (aqp Inc)

    current KS KDHE № KS-MS-0608 / KS-MI-0246

    mitigation, testing

    9137802000August 29, 2026cite ↗

  9. Zeiler, Richard

    Midwest Radon (aqp Inc)

    current KS KDHE № KS-MI-0258

    mitigation

    9137802000August 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 Johnson County, KS?

Open the source link on this page and match the name and credential number to KS KDHE. 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: How to choose a radon mitigation company: 6 checks before you sign

§ 4.3

Nearby places in Kansas

Kansas KDHE certifies radon measurement and mitigation technicians. The people below appear on the certified technician PDF we imported, listed under the county of the business address on that file. Read the methodology. Credential status can change.