1. ABB Ltd.
2. American Water Works Company Inc.
3. Aqua America Inc.
4. Aries Chemical Inc.
5. Calgon Carbon Corporation
6. China Everbright Water Ltd.
7. Cortec Corporation
8. Ecolab Inc.
9. Evoqua Water Technologies LLC
10. H2O Innovation Inc.
11. Hitachi Zosen Corporation
12. Innospec Inc.
13. Ovivo Inc.
14. Saur SAS
15. Suez S.A.
16. SWA Water Australia
17. Thames Water Utilities Limited
18. Thermax Limited
19. Trojan Technologies Group ULC
20. United Utilities Group PLC
21. Veolia Environnement SA
22. Wog Group
23. WSP Global Inc.
24. Xylem Inc.