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§ 4.1 — Connecticut

Radon mitigation in Connecticut

This page lists 37 people and firms with a current radon mitigation credential whose official record names Connecticut. 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.

37 listings. Type to narrow the list.

  1. Jordan Clark

    A & R Environmental

    current NRPP № 104889

    mitigation, Andover

    (860) 742-6767October 13, 2026cite ↗

  2. Joshua Clark

    A & R Environmental

    current NRPP № 104568

    mitigation, Andover

    (860) 742-6767October 13, 2026cite ↗

  3. Matthew J McCoy

    Water Dr. Llc

    current NRPP № 115187

    mitigation, Ansonia

    (203) 732-8585October 3, 2026cite ↗

  4. Rafael Colon Jr.

    Water Flo Inc. & Radon Solutions Of Ct

    current NRPP № 105169

    mitigation, Ansonia

    (203) 415-3872October 13, 2026cite ↗

  5. Melanie Miranda

    Apex Radon Testing Llc

    current NRPP № 113739

    mitigation, Beacon Falls

    (203) 747-1808October 3, 2026cite ↗

  6. Nathan A Bodnar

    Apex Radon Solutions

    current NRPP № 114420

    mitigation, Beacon Falls

    (203) 747-1808October 13, 2026cite ↗

  7. Alan Werner Jr.

    Werner Water Systems

    current NRPP № 109088

    mitigation, Bridgewater

    (860) 398-2012October 3, 2026cite ↗

  8. Scott Allen

    Water-flo. Inc. / Radon Solutions Of Ct

    current NRPP № 110960

    mitigation, Clinton

    (800) 732-7438October 3, 2026cite ↗

  9. Michael Kaptein

    Enviroconsultants & Recyclers, Inc.

    current NRPP № 113904

    mitigation, Danbury

    (203) 702-8833October 13, 2026cite ↗

  10. Scott Usinger

    Foley's Pump Service, Inc.

    current NRPP № 104644

    mitigation, Danbury

    (203) 792-2236October 13, 2026cite ↗

  11. Bill Ainsworth

    Greco And Haines, Inc.

    current NRPP № 107435

    mitigation, Derby

    (203) 735-9308October 13, 2026cite ↗

  12. Matthew Frillici

    Northeast Radon Mitigation Specialists Llc

    current NRPP № 111614

    mitigation, Easton

    (203) 423-3177October 3, 2026cite ↗

  13. Donald Morrison

    Don Morrison, Inc Dba Accusystems

    current NRSB № RRS-20G018

    mitigation, Essex

    September 30, 2026cite ↗

  14. David Pali

    Alpha Ne Environmental

    current NRPP № 110770

    mitigation, Fairfield

    (203) 907-9213October 3, 2026cite ↗

  15. Richard C. Kochan

    Hrp Associates, Inc.

    current NRPP № 108691

    mitigation, Farmington

    (860) 674-9570 EXT 145October 3, 2026cite ↗

  16. Jeffrey P. Sheridan

    Air & Water Environmental Llc

    current NRPP № 103768

    mitigation, Granby

    (860) 413-9354October 13, 2026cite ↗

  17. Michael Thibodeau

    A. Douglas Thibodeau L.l.c.

    current NRPP № 108126

    mitigation, Marlborough

    (860) 978-1513October 3, 2026cite ↗

  18. Alan J Ramon Piloso

    Northeast Envirocare Llc

    current NRPP № 113955

    mitigation, Middletown

    (860) 263-9499October 13, 2026cite ↗

  19. Jeremiah J. Weid

    J.h. Barlow Pump & Water Conditioning

    current NRPP № 104885

    mitigation, Naugatuck

    (203) 879-9230October 13, 2026cite ↗

  20. Christopher L Hayes

    Lance Dorfi Llc

    current NRPP № 110116

    mitigation, New Canaan

    (914) 600-8044October 3, 2026cite ↗

  21. Russell Monges

    Russell Monges

    current NRPP № 111415

    mitigation, North Haven

    (203) 361-7197October 3, 2026cite ↗

  22. Andrew J Morrison

    Don Morrison Inc. Dmi Accusystems For Radon & Water

    current NRPP № 112219

    mitigation, Old Saybrook

    (860) 399-5799October 3, 2026cite ↗

  23. Cole P Bova

    Trc

    current NRPP № 114421

    mitigation, Orange

    (860) 836-3307October 13, 2026cite ↗

  24. Andrew James Hurlbut

    Professional Water Systems, Inc.

    current NRPP № 104058

    mitigation, Ridgefield

    (203) 431-6897October 13, 2026cite ↗

  25. Erin Napoletano

    Absolute Radon & Home Inspections, Llc

    current NRPP № 108862

    mitigation, Seymour

    (203) 985-9441October 3, 2026cite ↗

  26. Kenneth J. Accashian

    Hsw Radon Contractors Llc

    current NRPP № 103065

    mitigation, Seymour

    (866) 787-2366October 13, 2026cite ↗

  27. Thomas Zickus

    Superior Water & Radon Systems, Llc

    current NRPP № 106257

    mitigation, Seymour

    (203) 888-2726October 13, 2026cite ↗

  28. Douglas Urisko

    Mdl Radon Mitigation And Measurement Llc

    current NRPP № 111053

    mitigation, Sherman

    (203) 917-2727October 3, 2026cite ↗

  29. Clyde R. Gould

    Swat Environmental

    current NRPP № 108017

    mitigation, Stafford Springs

    October 3, 2026cite ↗

  30. Keith Kristiansen

    The Go2guys Company

    current NRPP № 111697

    mitigation, Stratford

    (203) 605-0783October 3, 2026cite ↗

  31. Kevin Bednarz, Sr

    Ct Radon & Well Water Solutions

    current NRPP № 103689

    mitigation, Stratford

    (203) 903-6665October 13, 2026cite ↗

  32. Jay R. Dockendorff

    Jr Dockendorff Environmental, Llc

    current NRPP № 104452

    mitigation, Terryville

    (860) 213-2982October 13, 2026cite ↗

  33. Chris Johnson

    Banner Water, Llc

    current NRPP № 107769

    mitigation, Tolland

    (860) 872-8077October 13, 2026cite ↗

  34. Sean Banning

    Banner Water, Llc

    current NRPP № 104727

    mitigation, Tolland

    (860) 872-8077October 12, 2026cite ↗

  35. Thomas J Morrison

    Sound Foundations Llc

    current NRPP № 116186

    mitigation, Waterford

    (860) 373-2400October 13, 2026cite ↗

  36. Edward Lewis

    Ne Radon Doctors

    current NRPP № 105196

    mitigation, Weatogue

    (860) 478-5234October 13, 2026cite ↗

  37. Eugene Fercodini

    Advanced Water Systems, Inc.

    current NRPP № 116088

    mitigation, Wolcott

    (203) 228-7873October 13, 2026cite ↗
Fig. 4 — 37 of 37 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 Connecticut?

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: How to choose a radon mitigation company: 6 checks before you sign

Connecticut 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 Connecticut. Some states require a separate state credential to work legally. Read the methodology. Credential status can change.