| 1 | WAT | Waters Corporation | 10.59% |
| 2 | FERG | Ferguson Enterprises Inc. | 8.79% |
| 3 | ECL | Ecolab Inc. | 7.67% |
| 4 | ROP | Roper Technologies, Inc. | 6.81% |
| 5 | AWK | American Water Works Company, Inc. | 5.91% |
| 6 | MLI | Mueller Industries, Inc. | 4.67% |
| 7 | IEX | IDEX Corporation | 4.35% |
| 8 | WMS | Advanced Drainage Systems, Inc. | 4.06% |
| 9 | XYL | Xylem Inc. | 4.00% |
| 10 | PNR | Pentair plc | 3.98% |
| 11 | VLTO | Veralto Corporation | 3.87% |
| 12 | AOS | A. O. Smith Corporation | 3.79% |
| 13 | ACM | AECOM | 3.34% |
| 14 | CNM | Core & Main, Inc. | 3.10% |
| 15 | VMI | Valmont Industries, Inc. | 2.97% |
| 16 | WTRG | Essential Utilities, Inc. | 2.85% |
| 17 | BMI | Badger Meter, Inc. | 2.69% |
| 18 | TTEK | Tetra Tech, Inc. | 2.59% |
| 19 | ITRI | Itron, Inc. | 2.38% |
| 20 | WTS | Watts Water Technologies, Inc. | 2.03% |
| 21 | ZWS | Zurn Elkay Water Solutions Corporation | 1.54% |
| 22 | MWA | Mueller Water Products, Inc. | 1.16% |
| 23 | SBS | Companhia de Saneamento Básico do Estado de São Paulo - SABESP | 1.00% |
| 24 | FELE | Franklin Electric Co., Inc. | 0.95% |
| 25 | HWKN | Hawkins, Inc. | 0.93% |
| View PHO holdings |