| Parameter | Limit value NOM-127-SSA1-1994 | Influent Well | Effluent treatment plant |
| Temperature |
| 24 | 24 |
| Fe | 0.30 (mg/l) | 0.428 | 0.28 |
| Mn | 0.15 (mg/l) | 0.272 | 0.16 |
| Ammoniacal-N | 0.50 (mg/l) | 1.06 | 0.40 |
| Proteic-N | 0.10 (mg/l) | 0.17 | 0.11 |
| Color | 20 (Upt/co) | 30 | 10 |
| Turbidity | 5 (UTN) | 9.82 | 4.16 |
| Electric cond. | 1500 (µs/cm)*** | 2 894 | 2 797 |
| SDT | 1000 (mg/l) | 1 447 | 1 204 |
| Total hardness | 500 (mg/l) | 333 | 276 |
| Total alkalinity | 400 (mg/l)** | 711 | 420 |
| D. Q. O | 4 (mg/l) | 16.8 | 10.0 |
| Na | 200 (mg/l) | 310.8 | 120 |
| Mg hardness | 125 (mg/l) | 251 | 192 |
| Ca hardness | 30 (mg/l)*** | 112 | 72 |
| Ba | 0.7 (mg/l) |
|
|
| PH |
| 7.96 | 8.08 |
| Chlorides | 250 | 268 | 214 |
| Standard count | 200 (col/ml)* | 6500 |
|
| Total coliforms | 0 (col/ml) | 100 | 10 |
| Fecal coliforms | 0 (col/ml) | 0 | 0 |
| Phosphates |
| 2.00 | 2.11 |
| Sulfides |
| 0.6 | 0.5 |
| Sulfates |
| 125 | 124 |
| Free residual Cl2 | 0.2 - 1.5 (mg/l) |
| 1.07 |
| Total residual Cl2 |
|
| 2.5 |
| ICA*** | ≤1.00 | 1.93 | 1.40 |