| Variable | Unit | Min. | Max. | Median | Mean | SD |
| pH |
| 6.3 | 7.9 | 6.7 | 6.8 | 0.35 |
| EC | µS/cm | 92 | 1729 | 461 | 572 | 381 |
| ORP | mV | ‒190 | 135 | ‒82 | ‒61.3 | 70.1 |
| T | ˚C | 16.8 | 28.6 | 23.9 | 23.9 | 2.27 |
| Fe | mg/L | BDL | 12.99 | 3.15 | 3.75 | 2.81 |
| Mn | mg/L | BDL | 1.75 | 0.34 | 0.44 | 0.37 |
| Zn | mg/L | BDL | 0.951 | 0.026 | 0.065 | 0.186 |
| As | mg/L | BDL | 0.160 | 0.005 | 0.013 | 0.024 |