| Relationships | Role | Relationship Start | Relationship End |
| Cgi Private Equity Lp Llc | Parent | 12/21/2007 | |
| Gwii Infrastructure Investments Llp | Parent | 12/21/2007 | |
| Citi Infrastructure Investments (Uk Water) Ltd | Subsidary | 11/17/2008 | 10/30/2012 |
| Citi Infrastructure Investments (Uk Water) Ltd | Subsidary | 6/30/2008 | 11/16/2008 |
| Citi Infrastructure Investments (Uk Water) Ltd | Subsidary | 2/22/2008 | 6/29/2008 |
| Citi Infrastructure Investments (Uk Water) Ltd | Subsidary | 12/24/2007 | 2/21/2008 |