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Statistical analysis between study periods.
| Study periods | pHns (units) | Turbidityns (mg/L) | Aluminium∗ (mg/L) | Znns (mg/L) |
|---|---|---|---|---|
| Rainy season | 6.82 + 0.35 | 1.24 + 0.70 | 0.13 + 0.10 | 2.55 + 1.58 |
| Low water season | 7.02 + 0.22 | 1.58 + 0.41 | 0.37 + 0.34 | 3.15 + 1.94 |
ns = no significant difference; ∗significant difference.
