- Aqua-Aerobic Systems, Inc.
- BDP Industries, Inc.
- DeLoach Industries, Inc.
- Duperon Corporation
- Flottweg Separation Technology, Inc.
- GKD-USA, Inc.
- Graver Technologies LLC
- Harmsco Filtration Products
- Hayward Flow Control
- HUBER Technology, LLC
- Industrial Odor Control
- Parkson Corporation
- Pinnacle Manufacturing LLC
- Rain for Rent
- Roberts Filter Group
- Seven Seas Water Group
- Smith & Loveless, Inc.
- Trojan Technologies
- WaterSurplus
- Xylem
