Commercial Air & Water Treatment Systems

Air & Water Quality (AWQ) was formed in 1989 and currently employs 21 scientists, engineers, licensed plumbers and radon technicians. AWQ solves complex treatment problems with practical, real world solutions. From New Brunswick, Canada to Cancun, Mexico; we have provided public and private clients with solutions to a diversity of issues for over 25 years. Our staff of scientists, engineers and technicians provides expertise in water treatment and soil gas mitigation to a wide variety of commercial/industrial clients. We have designed systems as small as point of use drinking water systems to as large as 150 gallon per minute arsenic treatment systems. The systems we develop can be as simple as a set of cartridge filters or as complicated as a desalination system that produces drinking water from seawater. Our Commercial Air & Water Services are unmatched in the state of Maine.

Water Treatment

AWQ provides a full range of water treatment services. We design and build systems that meet complex drinking water requirements as well as client specifications. We retrofit aging infrastructure with innovative solutions.

Water treatment has become an integral part of most public water system operations. Regulatory changes, increasing ability to measure contaminants and a greater understanding of risks are requiring more advanced treatment of water sources.


  • Treatability studies
  • Conventional treatment systems
  • Innovative treatment systems
  • Membrane filtration
  • Reverse osmosis treatment
  • Desalination systems
  • Iron and manganese removal
  • Softening
  • Disinfection
  • Corrosion control
  • Taste and odor control
  • Arsenic removal
  • Radon removal
  • Uranium/radionuclide treatment
  • Process optimization

Soil Gas Mitigation

AWQ’s staff have designed and installed thousands of active sub-slab depressurization (ASD) systems. These systems can mitigate the entry of radon as well as many other soil gases like moisture, odors, solvents, gasoline.


  • Sub-slab diagnostics that are necessary to design effective ASD systems.
  • Design sub-slab mitigation systems from diagnostics.
  • Design sub-slab systems from client building plans.
  • Install and verify the performance of the ASD systems.
  • Evaluate existing systems.
  • Responsive Service Focused on Client Success

As a client, the success of your project is our only measure of success. What sets us apart is expertise in developing creative, sustainable, efficient solutions tailored to meet your long term needs.

  • We listen, investigate and understand the requirements.
  • We stress practical operator-friendly solutions.
  • We understand fiscal constraints and emphasize value-based solutions.
  • We involve and collaborate with our clients every step of the way.


Evidence of AWQ’s continued commitment to quality lies in the caliber of assignments that have successfully worked on. Please see a list of assignments that we have successfully worked on:



  • DoD, BNAS
  • State of Maine, DEP
  • Rutgers University
  • Pine Tree State Arboretum
  • DoD, Cutler Facility
  • University of New Hampshire
  • U. S. EPA
  • Fishlake National Wildlife Park
  • NOAA


  • Maine Medical Center
  • Atlantic Antibodies
  • Hawthorne House
  • Country Comfort Boarding Home
  • Therapy Leisure Center
  • Harbor Hill Nursing Home
  • Angel Day Care
  • Dube Daycare
  • Spencer Ridge Daycare
  • Spurwink
  • Sweetser
  • Murphy Homes
  • Biodesign


  • Spurwink
  • Waterboro Elementary
  • Lake Region H.S.
  • Medomak Valley H.S & J.H.
  • Chelsea Elementary
  • China Elementary
  • Cumberland
  • Gray/New Gloucester
  • Harpswell Elementary
  • Hartford/Sumner
  • Phippsburg Elementary
  • Hall Dale School System
  • New Brunswick Schools, Canada


  • ISF Trading
  • Portland Shell Fish
  • Browne Trading
  • Urchin Merchant


  • HL Turner Group
  • Harriman Associates
  • WBRC
  • Woodward and Curran
  • Portland Design Team
  • The Design Alliance
  • HNTB
  • Gorrill Palmer
  • VanDam and Renner


  • L. L. Bean
  • National Semiconductor
  • SCI Systems
  • SAPPI/S.D.Warren
  • University of New Hampshire
  • Birchwoods
  • Bray’s Brew Pub
  • Log Cabin Restaurant
  • Charlie’s Diner
  • Cub Properties
  • Fox Hill Nursery
  • North Atlantic Property Management
  • Oakhurst Dairy
  • Sebago Lake Condominiums
  • North Center Foods
  • Bramlie Corporation
  • Baxter Property Management-
  • Association of Lot Owners
  • Maple Leaf Bakery
  • Woodward and Curran
  • Portland Design Team
  • York Cumberland Housing
  • Boulos Co.
  • Malone
  • Reny Property
  • Town of Raymond
  • Town of Scarborough
  • Mid Maine Waste
  • Sabre Yachts
  • Maine Photographic Studio
  • Northern Utilities
  • Maritimes and Northeast Pipeline
  • Portland Natural Gas
  • Transmission System
  • Flotation Technologies
  • Bath Iron Works
  • Abex-Fisher Scientific
  • Portland Water District
  • Bath Water District
  • University of New England
  • Bottoms USA
  • Colonial Restaurant
  • The Great American Ski Company
  • Chez Fax
  • Down East Sun Sprouts
  • Modern Woodcrafters
  • Northwoods Condominiums
  • Performance Motors
  • Maine Properties
  • Atlantic Property Management
  • Pinewoods Mobile Home Park
  • Peoples Bank
  • American Legion Post 55
  • SMRT
  • H. L. Turner Group
  • JCN Engineering