1. 3M Company
2. Aclara Technologies Llc
3. Advance Trenchless Inc
4. Aquarius Spectrum Ltd
5. Aquatech International Llc
6. Aries Industries Inc
7. Dupont
8. Echologics Llc (Mueller Water Products)
9. Ecologix Environment Systems Llc
10. Hydratech Llc
11. Link-Pipe Inc
12. Picote Oy Ltd
13. Suez Environment Company
14. Toshiba Water Solutions Private Limited
15. Veolia Group