| Ecolab, Inc. | $76.7b | $289.77 | +0.1% | 992.9K | |
| American Water Works Company, Inc | $25.9b | $141.72 | -0.7% | 1.1M | |
| Xylem Inc | $23.8b | $106.84 | -0.5% | 2.5M | |
| Veralto Corporation | $23.1b | $103.34 | -0.9% | 1.1M | |
| IDEX Corporation | $17.2b | $231.02 | +0.9% | 511.9K | |
| Watts Water Technologies, Inc. Class A | $12.1b | $367.87 | +2.5% | 162.3K | |
| Essential Utilities, Inc. | $11.2b | $42.77 | -0.8% | 944.5K | |
| ADVANCED DRAINAGE SYSTEMS, INC. | $9.6b | $131.23 | +0.6% | 526.0K | |
| Tetra Tech Inc | $8.5b | $37.13 | +0.4% | 2.2M | |
| Pentair plc | $8.5b | $55.24 | -0.1% | 3.0M | |
| Zurn Elkay Water Solutions Corporation | $7.9b | $49.30 | +1.6% | 781.5K | |
| Core & Main, Inc. | $7.6b | $42.16 | +1.0% | 1.2M | |
| Stantec, Inc. | $7.6b | $71.00 | -0.1% | 268.5K | |
| Franklin Electric Co Inc | $4.4b | $98.75 | +0.3% | 174.1K | |
| Badger Meter, Inc. | $3.7b | $156.00 | +3.1% | 582.8K | |
| Mueller Water Products, Inc. | $3.4b | $22.46 | +0.9% | 964.0K | |
| American States Water Company | $3.3b | $85.23 | -0.3% | 105.6K | |
| California Water Service | $2.8b | $47.73 | -0.6% | 138.6K | |
| Hawkins Inc | $2.7b | $151.00 | +2.2% | 105.4K | |
| Select Water Solutions, Inc. | $2.6b | $19.14 | +3.4% | 4.1M | |
| H2O America Common Stock | $2.5b | $57.97 | -0.7% | 461.6K | |
| The Gorman-Rupp Company Common Shares | $2.0b | $75.00 | +1.6% | 118.4K | |
| WaterBridge Infrastructure LLC | $1.6b | $29.70 | -0.1% | 308.9K | |
| Great Lakes Dredge & Dock Corporation | $1.1b | $17.01 | +0.1% | 2.0M | |
| NWPX Infrastructure, Inc. Common Stock | $1.0b | $96.87 | +0.6% | 61.1K | |
| Middlesex Water Co | $1.0b | $56.20 | +0.4% | 78.7K | |
| Montrose Environmental Group, Inc. | $0.8b | $22.14 | 0.0% | 343.7K | |
| York Water Co | $499.2m | $31.86 | +0.3% | 51.1K | |
| Consolidated Water Co Inc | $482.8m | $27.93 | -2.0% | 46.8K | |
| EagleRock Land, LLC | $463.1m | $19.75 | +7.8% | 181.4K | |
| Artesian Resources Corp | $347.2m | $35.10 | -0.4% | 13.4K | |
| Energy Recovery, Inc. | $345.6m | $6.95 | +1.5% | 685.2K | |
| CADIZ, Inc. | $331.9m | $4.33 | -0.1% | 792.6K | |
| AirJoule Technologies Corporation Class A Common Stock | $287.5m | $2.87 | -3.7% | 572.8K | |
| Pure Cycle Corporation | $262.7m | $10.63 | -1.4% | 36.1K | |
| Global Water Resources, Inc. | $234.1m | $7.79 | -2.0% | 47.6K | |
| Shimmick Corporation Common Stock | $130.2m | $2.29 | -0.6% | 23.0K | |
| ZK International Group Co., Ltd Ordinary Share | $109.3m | $1.41 | +0.4% | 22.7K | |
| Flexible Solutions International, Inc. | $77.3m | $6.30 | -2.3% | 1.8K | |
| Geospace Technologies Corporation Common Stock | $62.1m | $4.45 | +3.1% | 80.8K | |
| 374Water Inc. Common Stock | $54.6m | $2.35 | -0.4% | 8.2K | |
| Nephros Inc. | $39.9m | $3.58 | +2.3% | 38.5K | |
| Birchtech Corp. | $39.5m | $1.25 | +9.7% | 11.9K | |
| Southland Holdings, Inc. | $36.5m | $0.75 | +2.1% | 99.1K | |
| WF Holding Limited Ordinary Shares | $21.8m | $0.08 | +11.5% | 103.9M | |
| SKK Holdings Limited Class A Ordinary Shares | $17.4m | $5.24 | 0.0% | N/A | |
| LiqTech International, Inc. | $17.2m | $0.32 | -7.5% | 281.2K | |
| Euro Tech Holdings Co Ltd. New | $9.9m | $1.35 | 0.0% | 12.3K | |
| Decent Holding Inc Class A Ordinary Shares | $5.4m | $1.16 | 0.0% | 4.0K | |
| ReTo Eco-Solutions, Inc. Class A Shares | $3.7m | $0.78 | +0.8% | 180.4K |