Table 2.
Seasonal variation of physicochemical and microbiological parameters, along La Paz River basin water sampling points
| Site no | Season | pH | Temperature (°C) | Conductivity (μS/cm) | Redox potential (mV) | MPN/100 mla |
|---|---|---|---|---|---|---|
| 1 | Dry | 5.95 | 8.43 | 163.23 | −43.70 | 10.23 |
| Rainy | 7.72 | 10.49 | 182.43 | −45.92 | 11.77 | |
| 2 | Dry | 7.67 | 12.13 | 1407.94 | −86.15 | 2.40 × 10 6 |
| Rainy | 8.19 | 13.32 | 1199.06 | −79.09 | 4.35 × 10 5 | |
| 3 | Dry | 7.60 | 17.99 | 1290.44 | −81.13 | 3.55 × 105 |
| Rainy | 8.01 | 19.56 | 1143.39 | −72.28 | 2.62 × 105 | |
| 4 | Dry | 7.38 | 10.95 | 713.47 | −69.98 | 4.81 × 105 |
| Rainy | 7.90 | 17.49 | 781.33 | −66.93 | 1.29 × 105 |
Significant differences in water quality parameters between dry and rainy seasons (P < 0.05), calculated by Wilcoxon, are shown in italics
aMost probable number of thermotolerant coliforms