1. 3M Company
2. Aqua Filsep Inc.
3. BASF SE
4. BWT Holding GmbH
5. Danaher Corporation
6. DuPont de Nemours Inc.
7. Ecolab Inc.
8. EcoWater Systems LLC.
9. Evoqua Water Technologies LLC
10. General Electric Company
11. ITT Inc.
12. Kemira Oyj
13. Kirton Water Treatment Services Ltd.
14. Kurita Water Industries Ltd.
15. Ovivo Inc.
16. Parker Hannifin Corp.
17. Pentair Plc
18. United Utilities Group PLC
19. Veolia Environment S.A.
20. Watts Water Technologies Inc.
21. Xylem Inc.