| ARTNA | Artesian Resources |
| AWK | American Water Works |
| CWCO | Consolidated Water |
| WTRG | Essential Utilities |
| CWT | California Water Service Group |
| MSEX | Middlesex Water |
| YORW | York Water |
| GWRS | Global Water Resources |
| AWR | American States Water |
| SBS | Companhia de Saneamento Básico do Estado de São Paulo - SABESP |