Radon Testing CompaniesSouth Dakota — testing
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§ 4.1 — South Dakota

Radon testing in South Dakota

This page lists 9 people and firms with a current radon testing credential whose official record names South Dakota. 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: the official file linked on each listing. Verify the number before you hire.

Latest credential check October 13, 2026. Methodology Individual record dates may be earlier. NRPP. NRSB.

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 lists when the official file says they hold both. The list is ordered by the city or county on each record. That place is where the record is filed, not a promise about where the person works.

9 listings. Type to narrow the list.

  1. John Adams

    Cardinal Complete Home Inspections Llc

    current NRPP № 111926

    testing, Belle Fourche

    (605) 210-3982October 3, 2026cite ↗

  2. Klint Kinney

    Kinney Home Inspections

    current NRPP № 111268

    testing, Huron

    (605) 354-4105October 3, 2026cite ↗

  3. Chad M Davis

    Neighborworks Dhr

    current NRPP № 115813

    testing, Lead

    (605) 641-7789October 13, 2026cite ↗

  4. Brian D Anderson

    Interlakes Community Action Partnership

    current NRPP № 115632

    testing, Madison

    (605) 270-0073October 13, 2026cite ↗

  5. Mark Wingert

    Boi Environmental

    current NRPP № 113481

    testing, Madison

    (800) 432-4418October 13, 2026cite ↗

  6. Samuel Lewis

    Capital City Radon Labs, Llc

    current NRPP № 114796

    testing, Pierre

    (605) 301-0630October 13, 2026cite ↗

  7. Amanda Mowry

    Black Hills Area Habitat For Humanity

    current NRPP № 115792

    testing, Rapid City

    (605) 910-7602October 13, 2026cite ↗

  8. Tim J Erickson

    Upper Edge Construction Llc

    current NRPP № 113380

    testing, Rapid City

    (605) 431-7785October 3, 2026cite ↗

  9. Stephen D. Green

    Total Home Inspection

    current NRSB № RMS-18SS055

    testing, Yankton

    September 30, 2026cite ↗
Fig. 4 — 9 of 9 listings have a mappable place. 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 South Dakota?

Open the source link on this page and match the name and credential number to the official file. 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

South Dakota pages here use current NRPP or NRSB certifications. City pages use the city printed on that record, not a ZIP-radius search. A national certification is not a state license in South Dakota. Some states require a separate state credential to work legally. Read the methodology. Credential status can change.