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Radon Measurement and Mitigation Contractors

Interested in becoming a certified radon measurement or mitigation contractor?

Trainings are held in Wisconsin twice per year; check the training page to get dates and locations. To be listed on this page, contact the Wisconsin Radon Grant Manager once you obtain certification.


Certified radon measurement and mitigation

Below is a list of contractors certified for measuring radon and reducing it. These contractors must pass a national exam, meet continuing education requirements, maintain a quality-assurance program, and follow appropriate testing protocols to be listed on this page.

Being listed on this page does not constitute endorsement by the State of Wisconsin or the Department of Health Services. The lists are provided as an additional resources for interested individuals.

Wisconsin has no radon regulations. As a result, homeowners are best served by educating themselves as much as possible before hiring a contractor and having a system installed. Before selecting a contractor from the Wisconsin list, first read the U.S. Environmental Protection Agency (EPA) booklet Consumers Guide to Radon Reduction. On page 4 there is a checklist to use as a guide for selecting a contractor.

The following are some additional general tips for those who need to hire a contractor.

  1. The certified individual must show up at the job site, at least to supervise, although they don't have to stay throughout the work. When inquiring about estimates, ask the person answering a call if the certified individual will be doing the work or at least inspect the system, and be sure he or she does.
  2. The fan must be outside the basement and the exhaust stack must go up to the roof, at least 10 feet above ground and 2 feet above any windows less than 10 feet away. If the exhaust is released at the sill of a house, some of this radon can enter the house through openings at the sill plate (where the basement sucks it in), and potentially into nearby windows. Studies have shown the average indoor radon can be increased by 1 pCi/L or more by these effects. In addition, experienced EPA contractors show that the joints and couplings to radon fans tend to leak radon on the high pressure side, significantly reducing the effectiveness of mitigation systems with fans in basements.
  3. For a list of mitigation system standards see the U.S. Environment Protection Agency (EPA) booklet Consumer's Guide to Radon Reduction, or call a Wisconsin Regional Radon Information Center toll-free, 1-888-LOW-RADON.
  4. These lists are updated frequently, but may not reflect the most current information. To find the status of a contractor's certification, visit the National Radon Proficiency Program (NRPP) and National Radon Safety Board (NRSB) websites and search for the contractor by name or zip code.

Sorted by county: Each contractor serves surrounding counties.

Certification Credentials Company Name County Telephone
Robert Miles
NRPP: RT-112305
Expiration: 8/31/2023
Five Miles Home Inspection Barron 715-869-6248
Adam Olinski
NRPP: RT-104254
Expiration: 3/31/2024
A-1 Radon & Vacuum Brown 920-639-6542
Jason Trimberger
NRPP: RT-106226
Expiration: 5/31/2025
Great Lakes Radon Testing & Mitigation LLC Brown 920-660-6324
Jacob Cisewski
NRPP: RT-108101
Expiration: 10/31/2023
JC Radon Services, LLC Buffalo 507-458-2730
Matthew Antczak
NRPP: RT-111740
Expiration: 12/31/2024
CESA10 Chippewa 715-271-5297
Chandler Bernklau
NRPP: 112573-RT
Expiration: 1/31/2024
Radon Solutions LLC. Chippewa 715-644-8352
Jeffrey Hartman
NRPP: 104925-RT
Expiration: 5/31/2025
Wisconsin Radon Measurement & Mitigation Chippewa 715-559-0684
Carl J. Francis
NRPP: RT-103659
Expiration: 2/29/2024
Radon Measurement and Mitigation Columbia

920-948-1345

Lance N. Rule
NRPP: RT-108622
Expiration: 4/30/2024

Wisconsin Radon Services LLC Columbia 608-279-7853
Jason Bender
NRPP: RT-112810
Expiration: 4/30/2024
Rock Mechanical LLC Dane 608-422-2789
Lance N. Rule
NRPP: RT-108622
Expiration: 4/30/2024
Wisconsin Radon Services LLC Dane 608-279-7853
Michael Gallagher
NRPP: RMP-106250
Expiration: 7/31/2025
MPG Radon Services Dane 608-516-5541
Kirk Mefford
NRPP: 108789-RMP
Expiration: 7/31/2024
Madison Radon Testing, LLC Dane 608-438-7831
Lindsay Mefford
NRPP: 108534-RMP
Expiration: 4/30/2024
Madison Radon Testing, LLC Dane 608-438-7831
Kade Mcgilvray
NRPP: RT-112452
Expiration: 10/31/2023
Aprilaire Dane 608-220-4886
Brian Kennihan
NRPP: RT-112154
Expiration: 5/31/2025
Aprilaire Dane 800-334-6011
Grant Meadows
NRPP: RT-112275
Expiration: 12/31/2023
Aprilaire Dane 608-310-6266
Leonard Wilkosz
NRSB: RMS-16SS060
Expiration: 7/20/2024
Wolf Home Inspection, LLC Dane 608-234-0455
Tami Jaeck
NRPP: RT-112041
Expiration: 5/31/2025
HSH Property Inspection Dodge 262-305-0314
Gary Millikin
NRPP: RT-109971
Expiration: 8/31/2024
R.E. Millikin Construction Ltd. Dodge 414-510-2331
Paul VanEngen
NRPP: 113462-RMP
Expiration: 12/31/2024
Inspect The Best WI Dodge 262-665-9990
Paul Nicholson
NRPP: RT-102417
Expiration: 11/30/2023
Radon Measurement and Elimination Services Dodge 262-797-8949
Chase Nicholson
NRPP: 104943-RMP
Expiration: 2/29/2024
Radon Measurement and Elimination Services Dodge 262-797-8949
Pierce Nicholson
NRPP: 108069-RMP
Expiration: 12/31/2023
Radon Measurement and Elimination Services Dodge 262-797-8949
Robert Lietha
NRSB: RT-108457
Expiration: 2/29/2024
Inspector Rob Agency, LLC Douglas 218-393-6482
Derick Leverty
NRPP: 110733 RT
Expiration: 1/31/2024
Radon Associates, LLC Dunn 866-697-2366
Michael Langer
NRPP: 105758 RT
Expiration: 6/30/2024
Langer Construction Dunn 651-261-1830

Damian Treiber
NRPP: RT-100337
Expiration: 2/29/2024

Radon Contractors, Testing, and Mitigation Florence 906-774-3795
FAX
906-774-2257
Jerome O'Callaghan
NRPP: RT-105888
Expiration: 7/31/2024
Wisconsin Radon and Environmental, LLC Fond du Lac 414-477-6026
Paul Nicholson
NRPP: RT-102417
Expiration: 11/30/2023
Radon Measurement and Elimination Services Fond du Lac 262-797-8949
Chase Nicholson
NRPP: 104943-RMP
Expiration: 2/29/2024
Radon Measurement and Elimination Services Fond du Lac 262-797-8949
Pierce Nicholson
NRPP: 108069-RMP
Expiration: 12/31/2023
Radon Measurement and Elimination Services Fond du Lac 262-797-8949
Thomas J. Beatty
NRPP: 110281 RT
Expiration: 5/31/2025
Inspection Services of Wisconsin LLC Green Lake 920-284-4806
Joseph Dach
NRPP:110637-RT
Expiration: 5/31/2025
Area Inspection Services Jefferson 920-988-8035
Paul Nicholson
NRPP: RT-102417
Expiration: 11/30/2023
Radon Measurement and Elimination Services Jefferson 262-797-8949
Chase Nicholson
NRPP: 104943-RMP
Expiration: 2/29/2024
Radon Measurement and Elimination Services Jefferson 262-797-8949
Pierce Nicholson
NRPP: 108069-RMP
Expiration: 12/31/2023
Radon Measurement and Elimination Services Jefferson 262-797-8949
Peter Decker
NRPP: 113640-RMP
Expiration: 7/31/2025
Pioneer Engineering & Environmental Services, LLC Kenosha 773-722-9200 x110
Terry Johnson
NRPP: RT-111941
Expiration: 3/31/2025
T - Rex Inspections LLC Kenosha 262-581-3367
Karla Newman
NRPP: RT-103009
Expiration: 3/31/2025
Radon Remedy - Testing Division Kenosha 262-577-5515
Seth M. Newman
NRSB: 21SS033
Expiration: 9/30/2023
Radon Testing Help Kenosha 262-760-9200
Paul Nicholson
NRPP: RT-102417
Expiration: 11/30/2023
Radon Measurement and Elimination Services Kenosha 262-797-8949
Chase Nicholson
NRPP: 104943-RMP
Expiration: 2/29/2024
Radon Measurement and Elimination Services Kenosha 262-797-8949
Pierce Nicholson
NRPP: 108069-RMP
Expiration: 12/31/2023
Radon Measurement and Elimination Services Kenosha 262-797-8949
Tim Oglesby
NRPP: 111019-RT
Expiration: 12/31/2023
Safe Haven Radon Solutions Kenosha 262-620-8262
Paul VanEngen
NRPP: 113462-RMP
Expiration: 12/31/2024
Inspect The Best WI Kenosha 262-665-9990
Travis Fronk
NRPP: RT-109760
Expiration: 4/30/2024
Absolute Inspection, LLC La Crosse 608-636-4772
Lucas Erickson
NRPP: RT-108150
Expiration: 9/30/2024
Erickson Radon Solutions Lafayette 608-558-6155
Benjamin Stromberg
NRPP: RT-107538
Expiration: 5/31/2024
Abatron Engineering Marathon 715-675-7277
Paul Nicholson
NRPP: RT-102417
Expiration: 11/30/2023
Radon Measurement and Elimination Services Milwaukee 262-797-8949
Chase Nicholson
NRPP: 104943-RMP
Expiration: 2/29/2024
Radon Measurement and Elimination Services Milwaukee 262-797-8949
Pierce Nicholson
NRPP: 108069-RMP
Expiration: 12/31/2023
Radon Measurement and Elimination Services Milwaukee 262-797-8949
Jerome O'Callaghan
NRPP: RT-105888
Expiration: 7/31/2024
Wisconsin Radon and Environmental, LLC Milwaukee 414-477-6026
Chad Rogness
NRPP: RT-109367
Expiration: 12/31/2024
Lifetime Radon Solutions Milwaukee 262-955-5701
Paul Nicholson
NRPP: RT-102417
Expiration: 11/30/2023
Radon Measurement and Elimination Services Ozaukee 262-797-8949
Chase Nicholson
NRPP: 104943-RMP
Expiration: 2/29/2024
Radon Measurement and Elimination Services Ozaukee 262-797-8949
Pierce Nicholson
NRPP: 108069-RMP
Expiration: 12/31/2023
Radon Measurement and Elimination Services Ozaukee 262-797-8949
Paul VanEngen
NRPP: 113462-RMP
Expiration: 12/31/2024
Inspect The Best WI Ozaukee 262-665-9990
Mike Boumeester
NRPP: RT-108386
Expiration: 6/30/2024
Radon Associates, LLC Polk 866-697-2366
Joyce Boumeester
NRPP: RMP-110682
Expiration: 7/31/2023
Radon Associates, LLC Polk 866-697-2366
Gregory Groshek
NRPP: 112076 RT
Expiration: 9/30/2023
Radon Specialist Portage 715-252-9092
Dixie Weidman
NRPP: RT-111914
Expiration: 7/31/2023
Northwoods Property Inspections Price 715-934-9105
Michael Weidman
NRPP: RT-111913
Expiration: 7/31/2023
Northwoods Property Inspections Price 715-934-9105
Joe Bednarek
NRPP: 110820-RT
Expiration: 9/30/2023
Quality Inspections, LLC dba National Property Inspections Racine 262-636-9909
Scott Cleven
NRPP: RT-108085
Expiration: 11/30/2023
Timber Ridge Home Inspection LLC Racine 262-770-2864
James Oezer
NRPP: RT-108243
Expiration: 9/30/2023
National Property Inspections Racine 262-636-9909

Kenneth W Naujock
NRPP: 110593-RMP
Expiration:12/31/2023

Radon Gone LLC Racine 262-227-4956
Paul Nicholson
NRPP: RT-102417
Expiration: 11/30/2023
Radon Measurement and Elimination Services Racine 262-797-8949
Chase Nicholson
NRPP: 104943-RMP
Expiration: 2/29/2024
Radon Measurement and Elimination Services Racine 262-797-8949
Pierce Nicholson
NRPP: 108069-RMP
Expiration: 12/31/2023
Radon Measurement and Elimination Services Racine 262-797-8949
James Seichter
NRPP: RT-108578
Expiration: 4/30/2024
24x7 Home Inspections Rock 608-302-5494

John Thompson
NRPP: RT-109758
Expiration: 4/30/2024

A.T. Pro Mitigation Systems Rock 608-758-0291
Jeff Anderson
NRPP: RMP-112351
Expiration: 3/31/2024
Anderson Radon Rock 815-353-7846
Paul Nicholson
NRPP: RT-102417
Expiration: 11/30/2023
Radon Measurement and Elimination Services Rock 262-797-8949
Chase Nicholson
NRPP: 104943-RMP
Expiration: 2/29/2024
Radon Measurement and Elimination Services Rock 262-797-8949
Pierce Nicholson
NRPP: 108069-RMP
Expiration: 12/31/2023
Radon Measurement and Elimination Services Rock 262-797-8949
Jeff Scott
NRPP: RT-107974
Expiration: 3/31/2025
Wisconsin Inspection Services & Consulting, LLC Sauk 608-434-0790
Paul Nicholson
NRPP: RT-102417
Expiration: 11/30/2023
Radon Measurement and Elimination Services Sheboygan 262-797-8949
Chase Nicholson
NRPP: 104943-RMP
Expiration: 2/29/2024
Radon Measurement and Elimination Services Sheboygan 262-797-8949
Pierce Nicholson
NRPP: 108069-RMP
Expiration: 12/31/2023
Radon Measurement and Elimination Services Sheboygan 262-797-8949
Jesse Green
NRPP: RT-107553
Expiration: 4/30/2024
American Radon Mitigation St. Croix 612-474-1004
Ryan Stewart
NRPP: RT-110562
Expiration: 4/30/2025
Straight Answer Home Inspections LLC St. Croix 715-529-1889
Jim Schaller
NRPP: RT-109887
Expiration: 8/31/2024
Professional Radon Service Vernon 608-606-3014
David Cook
NRPP: 107864-RMP
Expiration: 1/31/2025
Apostle Radon and Indoor Air Solutions Walworth 262-749-4266
Thomas B Cook Jr.
NRPP: 111255-RT
Expiration: 8/31/2024
Tom's Mitigation, LLC Walworth 262-749-1292
Michael Jensen
RNI2020209
Expiration: 6/30/2025
MJ Home Services, Inc. Walworth 815-355-8675
Paul Nicholson
NRPP: RT-102417
Expiration: 11/30/2023
Radon Measurement and Elimination Services Walworth 262-797-8949
Chase Nicholson
NRPP: 104943-RMP
Expiration: 2/29/2024
Radon Measurement and Elimination Services Walworth 262-797-8949
Pierce Nicholson
NRPP: 108069-RMP
Expiration: 12/31/2023
Radon Measurement and Elimination Services Walworth 262-797-8949
Jerry Kramer
NRPP: RT-112237
Expiration: 6/30/2025
Northern Waters Inspection and Testing Washburn 715-255-0478
Tami Jaeck
NRPP: RT-112041
Expiration: 5/31/2025
HSH Property Inspection Washington 262-305-0314
Paul Nicholson
NRPP: RT-102417
Expiration: 11/30/2023
Radon Measurement and Elimination Services Washington 262-797-8949
Chase Nicholson
NRPP: 104943-RMP
Expiration: 2/29/2024
Radon Measurement and Elimination Services Washington 262-797-8949
Pierce Nicholson
NRPP: 108069-RMP
Expiration: 12/31/2023
Radon Measurement and Elimination Services Washington 262-797-8949
Paul VanEngen
NRPP: 113462-RMP
Expiration: 12/31/2024
Inspect The Best WI Washington 262-665-9990
Jennifer Campbell
NRPP: RT-106368
Expiration: 7/31/2023
Lifetime Radon Solutions, Inc. Waukesha 262-955-5701
Brian Thompson
NRPP: RT-109591
Expiration: 2/29/2024
Lifetime Radon Solutions, Inc. Waukesha 262-955-5701
Paul Nicholson
NRPP: RT-102417
Expiration: 11/30/2023
Radon Measurement and Elimination Services Waukesha 262-797-8949
FAX
262-797-0798
George Booth
NRPP: 109947
Expiration: 1/31/2024
SWAT Environmental Waukesha 262-754-2211
Gavin Kosek
NRPP: 112201-RT
Expiration: 6/30/2025
SWAT Environmental Waukesha 262-754-2211
Paul Nicholson
NRPP: RT-102417
Expiration: 11/30/2023
Radon Measurement and Elimination Services Waukesha 262-797-8949
Chase Nicholson
NRPP: 104943-RMP
Expiration: 2/29/2024
Radon Measurement and Elimination Services Waukesha 262-797-8949
Pierce Nicholson
NRPP: 108069-RMP
Expiration: 12/31/2023
Radon Measurement and Elimination Services Waukesha 262-797-8949
Josh Ostby
NRPP: 111509-RT
Expiration: 9/30/2024
SWAT Environmental Waukesha 608-215-2241
Marc Tarkowski
NRPP: 111648-RT
Expiration: 1/31/2025
Advanced Inspections, LLC Waukesha 262-354-5643
Kevin Toll
NRPP: 113279-RMP
Expiration: 9/30/2024
Kettle Moraine Heating & Air Conditioning, LLC Waukesha 262-221-9323
Paul VanEngen
NRPP: 113462-RMP
Expiration: 12/31/2024
Inspect The Best WI Waukesha 262-665-9990
David Daniels
NRPP: RT-101791
Expiration: 6/30/2023
Radon Specialists of Wisconsin, Inc. Winnebago 920-751-0152
Dylan Szews
NRPP: RT-112231
Expiration: 7/31/2023
Radon Specialists of Wisconsin, Inc. Winnebago 920-751-0152

Sorted by county: Each contractor serves surrounding counties.

Certification Credentials Company Name County Phone
Jamie Adamski
NRPP: 104698-RMS
Expiration: 11/30/2023
Adamski Builders, LLC Ashland, Bayfield, Burnett 218-727-2495
Jason Trimberger
NRPP: 106227RMT
Expiration: 5/31/2025
Great Lakes Radon Testing and Mitigation, LLC Brown 920-660-6324
Adam Olinski
NRPP: 104255RMT
Expiration: 3/31/2024
A-1 Radon & Vacuum Brown 920-639-6542
Jacob Cisewski
NRPP: 108102RMT
Expiration: 10/31/2023
JC Radon Services, LLC Buffalo 507-458-2730
Chandler Bernklau
NRPP: 112574-RMS
Expiration: 1/20/2024
Radon Solutions LLC. Chippewa 715-644-8352
Jeffrey Hartman
NRPP: 104926RMT
Expiration: 5/31/2025
Wisconsin Radon Measurement and Mitigation Chippewa 715-559-0684
Carl Francis
NRPP: 103660RMT
Expiration: 2/28/2024
Radon Measurement and Mitigation, Inc. Columbia 920-948-1345
Lance Rule
NRPP: RMT-108623
Expiration: 04/30/2024
Wisconsin Radon Services LLC Columbia 608-279-7853
Lance Rule
NRPP: RMT-108623
Expiration: 4/30/2024
Wisconsin Radon Services LLC Dane 608-279-7853
Michael Gallagher
NRPP: 106251-RMS
Expiration: 7/31/2025
MPG Radon Services Dane 608-516-5541
David Cook
NRPP: 107496-RMS
Expiration: 3/31/2024
Apostle Radon and Indoor Air Solutions Dane 262-749-4266
Kade Mcgilvray
NRPP: RMT-112453
Expiration: 10/31/2023
Aprilaire Dane 608-220-4886
Grant Meadows
NRPP: RMT-112276
Expiration: 12/31/2023
Aprilaire Dane 608-310-6266
Gary Millikin
NRPP: 109972RMT
Expiration: 8/31/2024
R.E. Millikin Construction Ltd. Dodge 414-510-2331
Paul Nicholson
NRPP: 102418RMT
Expiration: 11/30/2023
Radon Measurement and Elimination Services Dodge 262-797-8949
Chase Nicholson
NRPP: 104944-RMS
Expiration: 2/29/2024
Radon Measurement and Elimination Services Dodge 262-797-8949
Pierce Nicholson
NRPP: 108070-RMS
Expiration: 12/31/2023
Radon Measurement and Elimination Services Dodge 262-797-8949
Rodney Reible
NRPP: 107491RMT
Expiration: 3/31/2024
Advanced Radon Solutions Dodge 920-296-4310
Jamie Adamski
NRPP: 104698-RMS
Expiration: 11/30/2023
Adamski Builders, LLC Douglas 218-727-2495
Jeffrey Hartman
NRPP: 104926RT
Expiration: 5/31/2025
Wisconsin Radon Measurement and Mitigation Eau Claire 715-559-0684
Ron Cutter
NRPP: 106065RMT
Expiration: 5/31/2025
Cutter Vac, LLC Fond du Lac 920-922-3360
Paul Nicholson
NRPP: 102418RMT
Expiration: 11/30/2023
Radon Measurement and Elimination Services Fond du Lac 262-797-8949
Chase Nicholson
NRPP: 104944-RMS
Expiration: 2/29/2024
Radon Measurement and Elimination Services Fond du Lac 262-797-8949
Pierce Nicholson
NRPP: 108070-RMS
Expiration: 12/31/2023
Radon Measurement and Elimination Services Fond du Lac 262-797-8949
Cameron Christenson
NRPP: RMT-109243
Expiration: 8/31/2025
Hady Electric, Inc. Jefferson 920-261-4947
Joseph Dach
NRPP:110638RMT
Expiration: 5/31/2025
Area Inspection Services Jefferson 920-988-8035
Paul Nicholson
NRPP: 102418RMT
Expiration: 11/30/2023
Radon Measurement and Elimination Services Jefferson 262-797-8949
Chase Nicholson
NRPP: 104944-RMS
Expiration: 2/29/2024
Radon Measurement and Elimination Services Jefferson 262-797-8949
Pierce Nicholson
NRPP: 108070-RMS
Expiration: 12/31/2023
Radon Measurement and Elimination Services Jefferson 262-797-8949
Karla Newman
NRPP: 101916RMT
Expiration: 3/31/2025
Radon Remedy, LLC Kenosha 800-917-2366
Paul Nicholson
NRPP: 102418RMT
Expiration: 11/30/2023
Radon Measurement and Elimination Services Kenosha 262-797-8949
Chase Nicholson
NRPP: 104944-RMS
Expiration: 2/29/2024
Radon Measurement and Elimination Services Kenosha 262-797-8949
Pierce Nicholson
NRPP: 108070-RMS
Expiration: 12/31/2023
Radon Measurement and Elimination Services Kenosha 262-797-8949
Jeff Tenuta
NRPP: 101809RMT
Expiration: 3/31/2025
American Radon Removal Co Kenosha 262-657-9000
Tim Oglesby
NRPP: 111020RMT
Expiration: 12/31/2023
Safe Haven Radon Solutions Kenosha 262-620-8262
Josh Dummer
NRPP: RMT -108941
Expiration: 1/31/2025
Radon Service Plus LLC La Crosse 608-304-5925
Lucas Erickson
NRPP: 108151RMT
Expiration: 9/30/2024
Erickson Radon Solutions Lafayette 608-558-6155
Mark Howe
NRPP: 104707RMT
Expiration: 9/30/2023
Howe Radon Contracting Marathon 715-370-1402
Benjamin Stromberg
NRPP: 107539RMT
Expiration: 5/31/2024
Abatron Engineering Marathon 715-675-7277
Scot Wickersheim
NRPP: 112866-RMS
Expiration: 5/31/2024
The Radon Man of WI, LLC Marathon 715-870-5887
Keith Fisher
NRPP: 107046RMT
Expiration: 8/31/2023
Accurate Radon Mitigation Systems, Inc. Milwaukee 262-378-1293
Jerome O' Callaghan
NRPP: 105889RMT
Expiration: 7/31/2024
Wisconsin Radon and Environmental Milwaukee 414-477-6026
Paul Nicholson
NRPP: 102418RMT
Expiration: 11/30/2023
Radon Measurement and Elimination Services Milwaukee 262-797-8949
Chase Nicholson
NRPP: 104944-RMS
Expiration: 2/29/2024
Radon Measurement and Elimination Services Milwaukee 262-797-8949
Pierce Nicholson
NRPP: 108070-RMS
Expiration: 12/31/2023
Radon Measurement and Elimination Services Milwaukee 262-797-8949
Chad Rogness
NRPP: 106455RMT
Expiration: 1/31/2024
Lifetime Radon Solutions Milwaukee 262-955-5701
Chris Bonniwell
NRPP: 112138 RMT
Expiration: 5/31/2025
Protect Environmental Ozaukee 262-202-7393
Eric John Lehner
NRPP: 106393 RMT
Expiration: 2/28/2024
Stonehenge Development Inc Ozaukee 414-659-0928
Paul Nicholson
NRPP: 102418RMT
Expiration: 11/30/2023
Radon Measurement and Elimination Services Ozaukee 262-797-8949
Chase Nicholson
NRPP: 104944-RMS
Expiration: 2/29/2024
Radon Measurement and Elimination Services Ozaukee 262-797-8949
Pierce Nicholson
NRPP: 108070-RMS
Expiration: 12/31/2023
Radon Measurement and Elimination Services Ozaukee 262-797-8949
Ethan Sandstrom
NRPP: RMT-107521
Expiration: 11/30/2024
Better Basement Solutions Pierce 715-307-9718
Mike Boumeester
NRPP: RMT-108712
Expiration: 6/30/2024
Radon Associates, LLC Polk 866-MY-RADON
866-697-2366
Anthony Walter
NRPP:108380RMT
Expiration: 12/31/2023
All Electric, LLC Portage 715-897-2693
Kenneth W Naujock
NRPP: 110594-RMS
Expiration: 12/31/2023
Radon Gone LLC Racine 262-227-4956
Paul Nicholson
NRPP: 102418RMT
Expiration: 11/30/2023
Radon Measurement and Elimination Services Racine 262-797-8949
Chase Nicholson
NRPP: 104944-RMS
Expiration: 2/29/2024
Radon Measurement and Elimination Services Racine 262-797-8949
Pierce Nicholson
NRPP: 108070-RMS
Expiration: 12/31/2023
Radon Measurement and Elimination Services Racine 262-797-8949
Jeff Anderson
NRPP: 112629 RMS
Expiration: 2/29/2024
Anderson Radon Rock 815-353-7846
David Cook
NRPP: 107496-RMS
Expiration: 3/31/2024
Apostle Radon and Indoor Air Solutions Rock 262-749-4266
Jeff Karich
NRPP ID 106046RMT
Expiration: 5/31/2024
Superior Radon Mitigation, LLC Rock 800-631-1403
Paul Nicholson
NRPP: 102418RMT
Expiration: 11/30/2023
Radon Measurement and Elimination Services Rock 262-797-8949
Chase Nicholson
NRPP: 104944-RMS
Expiration: 2/29/2024
Radon Measurement and Elimination Services Rock 262-797-8949
Pierce Nicholson
NRPP: 108070-RMS
Expiration: 12/31/2023
Radon Measurement and Elimination Services Rock 262-797-8949
John Thompson
NRPP: 103633RMT
Expiration: 10/31/2023
A.T. Pro Mitigation Systems Rock 608-758-0291
Jamie Adamski
NRPP: 104698-RMS
Expiration: 11/30/2023
Adamski Builders, LLC Sawyer 218-727-2495
Paul Nicholson
NRPP: 102418RMT
Expiration: 11/30/2023
Radon Measurement and Elimination Services Sheboygan 262-797-8949
Chase Nicholson
NRPP: 104944-RMS
Expiration: 2/29/2024
Radon Measurement and Elimination Services Sheboygan 262-797-8949
Pierce Nicholson
NRPP: 108070-RMS
Expiration: 12/31/2023
Radon Measurement and Elimination Services Sheboygan 262-797-8949
Jesse Green
NRPP: RMT 107554
Expiration: 4/30/2024
American Radon Mitigation St. Croix

612-474-1004

Ryan Stewart
NRPP: RMT-110563
Expiration: 04/30/2025
Straight Answer Home Inspections LLC St. Croix 715-529-1889
Mike Boumeester
NRPP: RMT-108712
Expiration: 6/30/2024
Radon Associates, LLC St. Croix 866-MY-RADON
866-697-2366
Michael Langer
NRPP: 105759RMT
Expiration: 6/30/2024
Langer Construction St. Croix 651-261-1830
Derick Leverty
NRPP: 110733 RT
Expiration: 1/31/2024
Radon Associates, LLC St. Croix 866-697-2366
Jeff Nelson
NRPP: 104202RMT
Expiration: 11/30/2024
Nelson Construction Radon Systems & Service St. Croix 715-781-5542
Jim Schaller
NRPP: 110003RMT
Expiration: 8/31/2024
Professional Radon Service Vernon 608-606-3014
David Cook
NRPP: 107496-RMS
Expiration: 3/31/2024

Apostle Radon and Indoor Air Solutions

Walworth 262-749-4266
Thomas B. Cook Jr.
NRPP: 111216 RMT
Expiration: 8/31/2024
Tom's Mitigation LLC Walworth 262-749-1292
Paul Nicholson
NRPP: 102418RMT
Expiration: 11/30/2023
Radon Measurement and Elimination Services Walworth 262-797-8949
Chase Nicholson
NRPP: 104944-RMS
Expiration: 2/29/2024
Radon Measurement and Elimination Services Walworth 262-797-8949
Pierce Nicholson
NRPP: 108070-RMS
Expiration: 12/31/2023
Radon Measurement and Elimination Services Walworth 262-797-8949
Jamie Adamski
NRPP: 104698-RMS
Expiration: 11/30/2023
Adamski Builders, LLC Washburn 218-727-2495
Paul Nicholson
NRPP: 102418RMT
Expiration: 11/30/2023
Radon Measurement and Elimination Services Washington 262-797-8949
Chase Nicholson
NRPP: 104944-RMS
Expiration: 2/29/2024
Radon Measurement and Elimination Services Washington 262-797-8949
Pierce Nicholson
NRPP: 108070-RMS
Expiration: 12/31/2023
Radon Measurement and Elimination Services Washington 262-797-8949
Scott Campbell
NRPP: 101552RMT
Expiration: 10/31/2023
Lifetime Radon Solutions Waukesha 262-955-5701
Brian Thompson
NRPP: RMT-109619
Expiration: 2/29/2024
Lifetime Radon Solutions Waukesha 262-955-5701
Timothy Henneman
NRPP: 11934RMT

Expiration: 6/30/2025

Lifetime Radon Solutions Waukesha 262-955-5701
David Cook
NRPP: 107496-RMS
Expiration: 3/31/2024
Apostle Radon and Indoor Air Solutions Waukesha 262-749-4266
Kevin Toll
NRPP: 113260-RMS
Expiration: 9/30/2024
Kettle Moraine Heating & Air Conditioning, LLC Waukesha 262-221-9323
Gary Lusz
NRPP: 105001RMT
Expiration: 10/31/2024
Best Radon Solutions, LLC Waukesha 262-745-4764
Paul Nicholson
NRPP: 102418RMT
Expiration: 11/30/2023
Radon Measurement and Elimination Services Waukesha 262-797-8949
Chase Nicholson
NRPP: 104944-RMS
Expiration: 2/29/2024
Radon Measurement and Elimination Services Waukesha 262-797-8949
Pierce Nicholson
NRPP: 108070-RMS
Expiration: 12/31/2023
Radon Measurement and Elimination Services Waukesha 262-797-8949
Rick Weber
NRPP: 104185RMT
Expiration: 3/31/2025
Radon Rescuers, LLC Waukesha 262-470-5332
Mike Gryszkiewicz
NRPP: 104175RMT
Expiration: 3/31/2025
Radon Rescuers Waukesha 262-844-4267
George Booth
NRPP: 107258RMT
Expiration: 1/31/2024
SWAT Environmental Waukesha 414-442-1300
Mike Green
NRPP: 111398 RMT
Expiration: 8/31/2024
SWAT Environmental Waukesha 262-754-2211
Gavin Kosek
NRPP: 112202 RMT
Expiration: 6/30/2025
SWAT Environmental Waukesha 262-754-2211
Adam Weber
NRPP: 105560 RMT
Expiration: 11/30/2023
Marshfield Radon Service Wood 715-305-6954

National Radon Consensus Standards

These standards are free for online-viewing and provide guidance on radon measurement and mitigation efforts of all building types. We encourage the use of these current codes and standards to help ensure public health protection.

Looking outside Wisconsin?

These lists are from two national certifying organizations that have the most current information:

Last revised September 21, 2023