1. Alfa Laval
2. ClearBlu Environmental
3. Concurrent Technologies Corporation
4. DP CleanTech
5. DuPont de Nemours Inc.
6. Ecolab
7. Evoqua Water Technologies LLC
8. Ferr-Tech
9. Fluence Corporation
10. Fluence Corporation Limited
11. General Electric Company
12. H2O Innovation Inc.
13. Hitachi
Ltd.
14. J Mark Systems Inc.
15. KUBOTA Corporation
16. Lenntech B.V.
17. Melbourne Water
18. Northrop Grumman Systems Corporation
19. ProChem Inc.
20. Siemens AG
21. SUEZ SA
22. Tangent Company LLC
23. Tetra Tech Inc.
24. Veolia Environnement SA