| 1 | WAT | Waters Corporation | 5.36% |
| 2 | A | Agilent Technologies, Inc. | 4.83% |
| 3 | IDXX | IDEXX Laboratories, Inc. | 4.57% |
| 4 | FERG | Ferguson Enterprises Inc. | 4.45% |
| 5 | XYL | Xylem Inc. | 4.05% |
| 6 | PNR | Pentair plc | 4.03% |
| 7 | VLTO | Veralto Corporation | 3.92% |
| 8 | ECL | Ecolab Inc. | 3.88% |
| 9 | IEX | IDEX Corporation | 3.86% |
| 10 | AWK | American Water Works Company, Inc. | 3.71% |
| 11 | MLI | Mueller Industries, Inc. | 3.55% |
| 12 | ROP | Roper Technologies, Inc. | 3.45% |
| 13 | WMS | Advanced Drainage Systems, Inc. | 3.22% |
| 14 | TSX: STN | Stantec Inc. | 3.14% |
| 15 | MAS | Masco Corporation | 3.14% |
| 16 | WTRG | Essential Utilities, Inc. | 3.00% |
| 17 | ACM | AECOM | 2.96% |
| 18 | TTEK | Tetra Tech, Inc. | 2.91% |
| 19 | CNM | Core & Main, Inc. | 2.75% |
| 20 | VMI | Valmont Industries, Inc. | 2.30% |
| 21 | ZWS | Zurn Elkay Water Solutions Corporation | 2.13% |
| 22 | TSX: AQN | Algonquin Power & Utilities Corp. | 2.07% |
| 23 | WTS | Watts Water Technologies, Inc. | 2.02% |
| 24 | PRMB | Primo Brands Corporation | 2.01% |
| 25 | FELE | Franklin Electric Co., Inc. | 1.98% |
| View FIW holdings |