- A. O. Smith
- Acorn Engineering/ Jay R. Smith MFG
- AIRCOM USA, INC.
- Allied Technical Solutions
- American Gas Safety
- Amico Corporation
- Anvil International & Smith-Cooper
- International
- Aqua-Rex LLC
- Armstrong Fluid Technology
- Armstrong International
- Asahi/America, Inc.
- AUTOBrine / The Cope Company Salt
- AWI Manufacturing
- BeaconMedaes
- Bradford White Corporation
- Burt Process Equipment
- Canature Watergroup
- CHICAGO FAUCET COMPANY
- Colmac WaterHeat
- Component Hardware Group
- CorzanĀ® Piping Systems
- Croker Division: Fire-End & Croker
- Corporation
- Dallas Specialty & Mfg Co
- ELKAY
- Eltek Group
- Encon Safety Products
- Equipment Controls Company
- Franke
- GF Piping Systems
- Guardian Equipment
- Highland Tank
- Holby Valve Inc
- Hubbell Water Heaters
- IAPMO
- ICC-ES
- Ideal No Hub Couplings
- Industrial Flow Solutions
- IOREX Global Company
- IPEX USA LLC
- ISQuote Software
- Jomar Valve
- Josam Company
- Judo Water Treatment Inc.
- Keeney Holdings LLC
- KOHLER CO
- Krowne Metal Corp.
- LAWLER MANUFACTURING CO., INC.
- Liberty Pumps
- LIXIL – American Standard, GROHE, DXV
- LONG TAI COPPER CORPORATION
- MARLO
- Metraflex
- MIRO Industries
- MTH Pumps
- Navien, Inc.
- Niagara
- NIBCO INC
- NSF International
- Nyle Water Heating Systems
- Oatey Comany
- Omega Flex Inc.
- ParkUSA
- Patterson-Kelley
- Pattons Medical
- PM Engineer – BNP Media
- Precision Plumbing Products
- Preferred Utilities Manufacturing Corp.
- Prier Products, Inc.
- QuantumFlo Inc
- Rainwater Management Solutions
- Rheem Water Heating
- RWC – SharkBite, HoldRite, Cash Acme,
- StreamLabs, John Guest
- SCHOTT North America, Inc.
- Speakman
- Stiebel Eltron, Inc.
- Stingray Systems LLC
- SuperKlean Washdown Products
- Syncorflo
- T&S Brass and Bronze Works
- Taco Comfort Solutions
- Thermaco, Inc. (Big Dipper Automatic
- Grease Interceptors & Trapzilla
- Hydromechanical Grease Interceptors
- ThermOmegaTech, Inc.
- Tigerflow Systems, LLC
- Total Automation Works, LLC
- Towle Whitney
- Tri-Tech Medical
- TSSC
- Uponor
- Water Control Corporation
- Water Quality Products Magazine
- Watts Water Technologies
- Willoughby Industries
- Woodford Manufacturing Company
- Zurn Industries, LLC