| DRASTIC parameters | Range | Rating | Weight |
| Depth to water table (m) |
|
| 5 |
|
| 1 - 2 | 9 |
|
|
| 2 - 4 | 8 |
|
| Net recharge (mm) |
|
| 4 |
|
| 35 - 45 | 7 |
|
|
| 45 - 55 | 8 |
|
|
| 55 - 60 | 9 |
|
|
| >60 | 10 |
|
| Aquifer media (Ø) |
|
| 3 |
|
| Sandstone and shale stone | 4 |
|
|
| Sand and clay | 5 |
|
|
| Sand and coral | 8 |
|