| No | Region | Drinking Water (M3) | ||
| Supply (S) | Demand (D) | Gap (S-D) | ||
| 1 | Padang city | 843.37 | 984.02 | −140.66 |
| 2 | Solok regency | 295.40 | 323.52 | −28.12 |
| 3 | South Pesisir regency | 317.96 | 403.24 | −85.28 |
| 4 | Padang Pariaman reg. | 267.21 | 438.02 | −170.81 |
| 5 | Pariaman city | 37.63 | 79.49 | −41.86 |
| 6 | Solok city | 64.83 | 53.80 | 11.03 |
| 7 | Padang Panjang city | 66.52 | 50.79 | 15.73 |
| 8 | Tanah Datar regency | 309.10 | 302.65 | 6.45 |
| 9 | Bukittinggi city | 134.87 | 96.93 | 37.94 |
| 10 | Agam regency | 318.73 | 387.66 | −68.92 |
| 11 | West Pasaman reg. | 21.92 | 304.41 | −282.49 |
| 12 | Pasaman regency | 230.21 | 235.19 | −4.98 |
| Total | 2907.76 | 3659.71 | −751.95 | |