| 1 | ECL | Ecolab Inc. | 7.85% |
| 2 | FERG | Ferguson Enterprises Inc. | 7.72% |
| 3 | ROP | Roper Technologies, Inc. | 7.22% |
| 4 | WAT | Waters Corporation | 7.19% |
| 5 | AWK | American Water Works Company, Inc. | 7.00% |
| 6 | CNM | Core & Main, Inc. | 4.65% |
| 7 | IEX | IDEX Corporation | 4.37% |
| 8 | WMS | Advanced Drainage Systems, Inc. | 4.04% |
| 9 | XYL | Xylem Inc. | 4.00% |
| 10 | VLTO | Veralto Corporation | 3.96% |
| 11 | ITRI | Itron, Inc. | 3.96% |
| 12 | PNR | Pentair plc | 3.95% |
| 13 | ACM | AECOM | 3.74% |
| 14 | TTEK | Tetra Tech, Inc. | 3.42% |
| 15 | AOS | A. O. Smith Corporation | 3.36% |
| 16 | MLI | Mueller Industries, Inc. | 3.34% |
| 17 | WTRG | Essential Utilities, Inc. | 3.10% |
| 18 | VMI | Valmont Industries, Inc. | 2.71% |
| 19 | BMI | Badger Meter, Inc. | 2.31% |
| 20 | WTS | Watts Water Technologies, Inc. | 1.77% |
| 21 | ZWS | Zurn Elkay Water Solutions Corporation | 1.56% |
| 22 | MWA | Mueller Water Products, Inc. | 1.28% |
| 23 | HWKN | Hawkins, Inc. | 0.99% |
| 24 | FELE | Franklin Electric Co., Inc. | 0.88% |
| 25 | AWR | American States Water Company | 0.84% |
| View PHO holdings |