| Year | Water needed MCM | Water loss (MCM) | Quantity required including total loss MCM | Quantity required-Administrative Loss MCM | ||
| Total | Administrative | Technical | ||||
| 1986 | 204.1 | 72.4 | 36.4 | 36 | 276.5 | 240.1 |
| 1987 | 211.4 | 81.8 | 41.8 | 40 | 293.2 | 251.4 |
| 1988 | 219.1 | 91.8 | 47.5 | 44.3 | 310.9 | 263.4 |
| 1989 | 227.1 | 95.8 | 48.5 | 47.3 | 322.9 | 374.4 |
| 1990 | 253.1 | 104.5 | 56.6 | 47.9 | 357.6 | 267 |
| 1991 | 270.2 | 100.3 | 52.7 | 47.6 | 370.5 | 274.7 |
| 1992 | 280.2 | 126.5 | 71.6 | 54.9 | 406.7 | 308 |
| 1993 | 291.5 | 126.4 | 68 | 58.4 | 417.9 | 328.6 |
| 1994 | 302.1 | 122 | 67.7 | 54.3 | 424.1 | 334.5 |
| 1995 | 303.1 | 142.8 | 78.8 | 64 | 445.9 | 355.5 |
| 1996 | 312.2 | 133.7 | 78.3 | 55.4 | 446.9 | 357.5 |
| 1997 | 324.2 | 131.2 | 76.3 | 54.9 | 455.4 | 358 |
| 1998 | 335.9 | 136 | 79.2 | 56.8 | 471.9 | 370 |