About Us


Advanced Radon Mitigation & Water Treatment

is New Hampshire's full service

Radon Mitigation and Water Treatment Company.


With decades of experience, our trained technicians take pride in their skills and ability to provide all of our customers with the best in state-of-the-art system installations, products and technology.  We customize a system to meet your individual needs, teach you about that system, and are always available to answer any questions you may have- even if it's years later!




• Fully insured


• Trained and Certified by the AARST National Radon Proficiency Program (NRPP) for Radon Contractor Proficiency.


Certified Water Quality Association, CWS Level 6

       (The highest acheivable level of certification) 


• New Hampshire Systems Operators License #1792


• Member in good standing of the American Association of Radon Scientists and Technologists (AARST)


• Certified by Cook College at Rutgers University for "waterborne radon proficiency"


• Certified "Radon information Speaker's Bureau" by the Center of Environmental Research and Technology Institute (CERTI)


* A Better Business Bureau Accredited Business

with an A+ Rating


We are committed to service and confident in our ability to deliver to you the absolute best Radon Mitigation, Water Filtration, or Moisture Reduction system available on the market today...and back it up with the best service and warranties in the industry!

Our Team

Meet Our Office Customer Support

Phyllis Gelinas

Office Manager/Owner


Customer Service

Accounts Payable/Receivable


Diane St. Pierre

Office Receptionist


Customer Service Associate

 Contact Phyllis or Diane with your Radon questions,

and to schedule an on site evaluation.

Meet Our Certified Water Specialist

Christopher Saltmarsh

Certified Water Specialist

NRPP Certified Radon Mitigation Technician



Certified WQA CWS Level 6

NH Systems Operators License #1792

Solving Water Challenges since 1991


Meet Our Qualified Installation/Service Technicians

Corey Buchan

Operations Service Manager

NRPP Certified Radon Mitigation Technician




Radon & Water Treatment Systems

Proud Associate since "2002"


Keith Vaillancourt

Radon "Crew Chief"



Radon & Water Treatment Systems

Proud Associate since "2003"


Ryan Harnum


Radon & Water Treatment Sytems


Radon & Mechanical Ventilation Systems

Extensive Remodeling Background

Proud Associate since "2010"

Robin D. Gelinas