1. 3M Company
2. A. O. Smith Corporation
3. Amway Corp.
4. Aquasana,Inc.
5. BRITA Group
6. BWT Holding GmbH
7. Culligan International Company
8. Eaton Corporation plc
9. Eureka Forbes Ltd.
10. Evoqua Water Technologies LLC
11. General Electric Company
12. iSpring Water Systems LLC
13. KENT RO SYSTEMS LTD
14. LG Electronics Inc.
15. Livpure Smart Homes Pvt Ltd
16. Lydall Industrial Filtration
17. MANN+HUMMEL International GmbH & Co. KG
18. Mantec Filtration.
19. Panasonic Corporation
20. Pentair PLC
21. Resideo Technologies Inc.
22. Tata Chemicals Ltd.
23. The Dow Chemical Company
24. Trojan Technologies
25. US Water Systems.
26. Veolia USA Inc.