| 1 | Xylem Inc. | | USA |
| 2 | Emerson Automation Solutions Regulators and Relief Valves | | USA |
| 3 | Endress+Hauser | | USA |
| 4 | KROHNE Inc. | | USA |
| 5 | Hamilton Company | | USA |
| 6 | Polestar Technologies Inc. | | USA |
| 7 | GENEQ Inc. | | USA |
| 8 | pHionics Inc. | | USA |
| 9 | ENMET | | USA |
| 10 | Mettler-Toledo | | USA |
| 11 | Yokogawa Analytical | | USA |
| 12 | Fluorometrics Instruments LLC | | USA |
| 13 | Nyad Inc. | | USA |
| 14 | Inframark Water and Infrastructure Services | | USA |
| 15 | Stevens Water Monitoring Systems Inc. | | USA |
| 16 | Georg Fischer LLC | | USA |
| 17 | Campbell Scientific Inc. | | USA |
| 18 | NovaLynx Corporation | | USA |
| 19 | Sea-Bird Scientific | | USA |
| 20 | Insite Instrumentation Group Inc. | | USA |
| 21 | Rhino Process Controls & Instrumentation | | USA |
| 22 | Hatch Company | | USA |
| 23 | Cerlic Environmental Controls Inc. | | USA |
| 24 | Hydrolab | | USA |
