A. W. Rose & Associates Johnson, Mirmiran & Thompson
A.Y. McDonald Manufacturing Company Johnston, Inc.
Advanced Drainage Systems, Inc. K.L. Shane Inc.
American AVK Company Kappe Associates, Inc.
American Flow Control Keller America Inc.
AMR, Inc. Kendall & Son Ltd.
Analabs KSB, Inc.
Anderson & Associates, Inc. LB Water
AquaLaw PLC Liberty Pumps
Aqueous Sales Malcolm Pirnie, Inc.
Atlantic Machinery Maryland Biochemical Company
Atlantic Utility Solutions, Inc. Master Meter, Inc.
Atlantic Valve & Equipment, Inc. Maxim Engineering, Inc.
ATS International, Inc. McCoy & McCoy Laboratories, Inc.
AutomaTech, Inc. Mid Atlantic Storage Systems
Blue Earth Labs Mid-Atlantic Waste Systems
Baker Manufacturing Co. Miller Supply Company
Boggs Municipal Services, Inc. Mission Communications
Bowman Consulting Group MT Electronics Inc.
Brenntag Mid-South MTEK, Inc. (Bio-Systems International)
Brewco Pipe & Supply Mueller Company
Caldwell Tanks, Inc. Mueller Systems
Carolina Meter & Supply Neptune Technology Group
Carotek, Inc. Pall Corporation
CHA Consulting, Inc. PAX Water Technologies Inc
Chapman Tecnical Group Pentree, Inc.
Cimtec Automation Perma-Patch, Inc.
CLA-VAL Company Phoenix Tank
Clear Flow by Americast PHR + A, A Pennoni Company
CMC Supply, Inc. Pittsburg Tank & Tower Company
Commonwealth Engineering & Sales Pleasants Construction
Consolidated Pipe & Supply Co., Inc. Powerseal/Garrison
CONTECH Construction Products, Inc. Progress Engineers, P.C.
Continential Utility Solutions, Inc. Pump Engineering Sales & Service
Control Equipment Co. QS/1
Coyne Environmental Services R.P. Finch, Inc.
Cretex Specialty Products Red Bud Supply
Crocker & Associates, Inc. Reed Manufacturing Company
Crowder Construction Company REI Consultants, Inc.
Daparak, Inc. Reid Engineering Co., Inc.
Davis, Bowen & Friedel Roanoke Pump Sales & Services, Inc.
Delta Systems Environmental LLC Rockacy & Associates
Dewberry & Davis, Inc. Romac Industries
Diversified Technology Corp. Schnabel Engineering
Dorsett Technologies, Inc. Shepherd Group/ D&S Contractors
Draper Aden Associates Sherwood-Logan & Associates, Inc.
Dutchland, Inc. South Data
Earth Vector Systems Sigma Corp.
Emergency Communications Network Siler Environmental Equipment Co.
Engineering Equipment Company Source 1 Environmental
EnviroCompliance Laboratories Inc. Southern Corrosion
Environmental Monitoring, Inc. SpectraShield of the Carolinas
Ferguson Waterworks State Industrial Products
Fidelity Power Systems Sterling Engineering Solutions, Inc.
FLOMEC, Inc. Sunapsys, Inc.
Flow-Tech, Inc. SwiftReach Networks, Inc.
Gardner, O’Connor, Inc. Sydnor Hydro, Inc.
Geiger Team Industrial  Services Inc.
GHD, Inc. (Formally Stearns & Wheler) Ten Cate Geosynthetics Water & Environment Division
Glatfelter Public Practice Tencarva
Godwin Pumps of America The Crom Corporation
Golder Associates The Ford Meter Box Co., Inc.
Griffin Pipe Products The Perkinson Co., Inc.
HACH Company Thermo Scientific Orion
HD Supply Waterworks (Martinsburg) Thompson & Litton
HD Supply Waterworks (Roanoke) Timmons Group
HD Supply Waterworks, Ltd. TNEMEC Co., Inc.  (TSE, Inc.)
Heyward, Inc. Tri-State Utilities
Hill’s Electric Motor Service Inc. U.S. Pipe & Foundry Co.
Hose Solutions, Inc. Univar USA Inc.
HP Hood, LLC USA BlueBook – #619
Hurt & Proffitt, Inc. Utility Service Co., Inc.
Hydro Designs, Inc. Vaden Company / Applied Engineering Inc.
ICS – Blount International Virginia Resources Authority
Inboden Environmental Services, Inc. Water Guard, Inc.
Instrulogic Corporation Whitman, Requardt and Associates, LLP
Ireland Electric Company Wiley|Wilson
Itron Winschel Environmental, LLC
James River Equipment Corp., LLC Wood Equipment Co.
WW Associates