A.Y. McDonald Mfg. Co.
ADAPCO Environmental Solutions
Adaptor, Inc.
Air Diffusion Systems
AIRVAC
All Service Contracting Corp.
All State Tank Manufacturing, LLC
Allied Municipal Supply
American Flow Control
American Leak Detection
Apex Pumping Equipment
Applied Technologies, Inc.
AQUAFIX
Aquifer Science & Technology

Backflow Solutions, Inc.
Badger Meter
Bainbridge, Gee, Milanski
Benton & Associates
Bernardi Securities, Inc.
Brenntag Mid-South, Inc.
Brotcke Well and Pump
Buchanan Industrial Controls
Burns & McDonnell Engineers

Cady Aquastore
Caldwell Tanks, Inc.
Carus Phosphates, Inc.
Cascade Waterworks
CB&I
Chemical Pump Sales & Service
Coe Equipment, Inc.
Control Works, Inc.
Crawford, Murphy & Tilly, Inc.
Curry & Associates

Dixon Engineering, Inc.
Donohue & Associates, Inc.
Dorner Company
Drydon Equipment, Inc.
Durkin Equipment

E.R.T.C.
E Tip, Inc.
Earth Science Laboratories
Earth Tech
East Jordan Iron Works, Inc.
Eaton Mechanical Sales, LLC
Electric Controls Co.
Emma Sales, LLC
Energenecs, Inc.
Energy Saving Solutions, Inc.
Engineering Enterprises, Inc.
Environmental Management Corporation
Environmental Resources

Farnsworth Group, Inc.
First Banker's Banc Securities, Inc.
Fischer, Harris & Associates
Flo-Systems, Inc.
Flolo Corporation
Fluid & Thermal Systems
Ford Meter Box Co.
Francis Associates

General Pump & Machinery, Inc.
Global Water Instrumentation
Godwin Pumps of America, Inc.
Greene and Bradford, Inc.

Hanfland Painting Contractors
Hawkins Water Treatment Group
HD Supply Waterworks, Inc.
Heil2O
Heneghan & Associates, P.C.
Hoerr Construction, Inc.
Hydra Stop
Hydro-Kinetics Corp

ICAA Rural Community Assistance Program
Illinois Electric Works
Illinois Meter, Inc.
Illinois Section AWWA
ITT Flygt Corporation

JCM Industries, Inc.
JM Eagle
John H. Sabo Associates, Inc.
JULIE, Inc.

Kaskaskia Engineering Group
Kaskaskia Springs Water

Layne-Western Company
Leak Detection Services, Inc.
Lemna Technologies
Ley & Associates, Inc.
Linden & Company
LOCIS

M.E. Simpson Company Co., Inc.
Maguire Iron/Water Tower Paint & Repair
Master Meter, Inc.
Maurer-Stutz, Inc.
MECO Engineering Company
Mendota Agri-Products
Metropolitan Industries, Inc.
Midwest Environmental, Inc.
Midwest Meter, Inc
Midwest Mobile Washers
Mike's Inc.
Milano & Grunloh Engineers, Inc.
Missouri Machinery & Engineering, Inc.
MSA Professional Services
Mueller Co.
Municipal Equipment Company
Municipal Well & Pump

NATGUN Corp.
Navionics Research, Inc.
Newell's Sand\Rock Filter Cleaning
Norman Noe Co, Inc.
Northern Water Works Supply/Ferguson Waterworks

Ortman Drilling & Water Services

PDC Laboratories, Inc.
Peterson & Matz, Inc.
Planet Underground Interactive
Pristine Water Solutions, Inc.
Pro-Dive, Inc.
Progress Environmental

R.E. Pedrotti
R.H. Tauser Associates
Rammelkamp, Bradney, P.C.
RE-OX, LLC
Ressler & Associates
Rhutasel & Associates, Inc.
Richards Electric Motor Co.
Ringering Sales Company, Inc.
Rural Special Districts Insurance Service

S & K Equipment Co.
Schulte Supply
Scrub-A-Home/H2O Towers
SEC Automation/Smith Engineering Consultants, Inc.
Sensus Metering Systems
Shaw Environmental, Inc.
Sidener Environmental Services, Inc.
Sigma Corp.
Smith-Blair, Inc.
Sodemann & Associates, Inc.
Stewart Spreading
Suburban Laboratories, Inc.
Sunshine Water Treatment

TEST, Inc.
The Kupferle Foundry Company
The Leary Constructions Company, Inc.
Tnemec/Taylor Coatings Sales, Inc.

Ulmer Equipment
United Systems & Software
USA BlueBook
USA Tank Storage Systems
Utility Service Company, Inc.

Vandevanter Engineering Company
Vermeer Midwest
Viking Chemical Company

Water Leak Locators, LLC
Water Products Company
Water Solutions Unlimited, Inc.
Water Well Solutions
Willet, Hoffman & Associates
William Charles Investments
WRT

HD Supply Waterworks, Inc. Layne-Christensen Company Midwest Meter, Inc. USA Bluebook Vermeer Midwest