| Description | Level of improvement in WUE | Bangladesh | India | Nepal | Pakistan | Sri Lanka | Rest of South Asia |
| Average costs for each level of improvement in WUE ($/ha) | 10% | 31 | 27 | 33 | 35 | 41 | 35 |
| 20% | 74 | 63 | 78 | 83 | 96 | 83 | |
| 30% | 167 | 142 | 176 | 186 | 216 | 186 | |
| 40% | 340 | 289 | 358 | 380 | 440 | 380 | |
| Capital requirement for each level of improvement in WUE (million $) | 10% | 212 | 2000 | 49 | 608 | 36 | 63 |
| 20% | 503 | 4735 | 116 | 1441 | 86 | 149 | |
| 30% | 1132 | 10667 | 260 | 3245 | 193 | 336 | |
| 40% | 2307 | 21736 | 531 | 6612 | 393 | 685 |