| Aquifer | pH at wells percent of 30% | pH at wells percent of 50% | pH at wells percent of 90% |
| Ga’ra Aquifer. D1 | 7.8 | 7.5 | 7.0 |
| Mullusi Aquifer. D2 | 7.95 | 7.9 | 7.2 |
| Hartha Aquifers. D3 | 7.8 | 7.5 | 7.0 |
| Digma-Tayarat Aquifer. D4 | 7.6 | 7.5 | 7.1 |
| Muhaywir-Ubaid Aquifer. D5 | / | 7.0 | / |
| Ubaid-Mullusi Aquifer. D6 | 7.8 | 7.5 | 7.3 |
| Rattga-Digma-Tayarat Aquifers. D7 | 7.9 | 7.6 | 7.1 |
| Digma-Tayarat. D8 | 7.7 | 7.2 | 6.9 |