| Parameters | January | February | March | April | May | June | Max. | Min. | Avg. |
| pH | 7.9 | 8.2 | 8.7 | 9.0 | 9.4 | 8.9 | 9.4 | 7.9 | 8.7 |
| Cl (mmol/L) | 129 | 130 | 138 | 136 | 141 | 156 | 156 | 129 | 138.3 |
| PO4-P (mg/L) | 15 | 16 | 21 | 25 | 28 | 30 | 30 | 15 | 22.5 |
| BOD (mg/L) | 63 | 74 | 89 | 103 | 101 | 112 | 112 | 63 | 75.3 |
| COD (mg/L) | 769 | 865 | 896 | 925 | 1127 | 1023 | 1127 | 769 | 934.2 |
| TSS (mg/L) | 102 | 113 | 98 | 121 | 162 | 148 | 162 | 98 | 124 |