Download Constituents file as of 09/30/2016
| Symbol | Company Name | Index Weight |
| ECL UN | Ecolab Inc | 2.00% |
| MWC PM | Manila Water Co Inc | 1.00% |
| CMN UN | Cantel Medical Corp | 1.00% |
| BRSS UN | Global Brass & Copper Holdings Inc | 1.00% |
| ERII UW | Energy Recovery Inc | 0.00% |
| GEBN VX | Geberit AG | 4.00% |
| 6788 JT | Nihon Trim Co Ltd | 1.00% |
| PNR UN | Pentair PLC | 3.00% |
| AALB NA | Aalberts Industries NV | 3.00% |
| UNR1V FH | Uponor OYJ | 4.00% |
| CCC UN | Calgon Carbon Corp | 3.00% |
| FI/N SE | Georg Fischer AG | 4.00% |
| AOS UN | AO Smith Corp | 1.00% |
| XYL UN | Xylem Inc/NY | 2.00% |
| IP IM | Interpump Group SpA | 2.00% |
| HSV LN | HomeServe PLC | 4.00% |
| HYF SP | Hyflux Ltd | 4.00% |
| TTC UN | Toro Co/The | 2.00% |
| ANDR AV | ANDRITZ AG | 5.00% |
| ECI CT | Enercare Inc | 6.00% |
| PLP LN | Polypipe Group plc | 5.00% |
| GWA AT | GWA Group Ltd | 7.00% |
| SIIC SP | SIIC Environment Holdings Ltd | 0.00% |
| AWR UN | American States Water Co | 2.00% |
| 270 HK | Guangdong Investment Ltd | 3.00% |
| SJW UN | SJW Corp | 2.00% |
| SEV FP | Suez | 4.00% |
| 371 HK | Beijing Enterprises Water Group Ltd | 1.00% |
| UU/ LN | United Utilities Group PLC | 3.00% |
| 1065 HK | Tianjin Capital Environmental Protection Group Co Ltd | 2.00% |
| TTW TB | TTW PCL | 4.00% |
| AGUAS/A CC | Aguas Andinas SA | 3.00% |
| SVT LN | Severn Trent PLC | 3.00% |
| YTLP MK | YTL Power International Bhd | 5.00% |
| IAM CC | Inversiones Aguas Metropolitanas SA | 1.00% |
| 855 HK | China Water Affairs Group Ltd | 1.00% |
| BMI UN | Badger Meter Inc | 1.00% |