| S.N | Items | Original Scope 2001 (US$ in million) | Restructured Cost in 2008 (US$ in million) | Estimated Total Cost in 2013 (US$ in million) |
| 1 | 27.5 km diversion tunnel construction, including construction of access roads and water treatment plant | 134.3 | 147.8 | 168.6 |
| 2 | BDS construction, distribution network improvements, and waste water system improvement | 128.1 | 34.4 | 34.4 Completed |
| 3 | Kathmandu Valley water source development (completed before restructuring) | 14.1 | 14.1 Completed | 14.1 |
| 4 | Social and environment support and project implementation support | 47.5 | 63.5 | 72.5 |
| 5 | Contingencies, tax, and duties | 140.0 | 57.5 | 66.1 |
| Total | 464.0 | 317.3 | 355.7 | |