Anaerobic Treatment
- ABS USA/Sulzer Pump Solutions (US) Inc.
- Aerzen USA
- Agriment Services Inc.
- Aqua-Aerobic Systems, Inc.
- Ashbrook Simon-Hartley
- Biowater Technology
- CB&I
- Headworks, Inc.
- JDV Equipment Corporation
- Olympus Technologies, Inc.
- Ovivo
- Probiotic Solutions
- ProSonix
- Vaughan Company, Inc.
- WesTech Engineering, Inc.
