Trace metals |
| Blokosso | Cocody village | M’badon | M’pouto | WHO (Guidelines values for effluent water) |
Total Iron (Fe) | mg/L | 0.746 | 0.796 | 0.658 | 0.724 | 1 |
Total Manganese (Mn) | mg/L | 0.368 | 0.340 | 0.356 | 0.318 | 0.05 |
Total copper (Cu) | mg/L | 0.014 | <0.003 | <0.003 | <0.003 | 2.5 |
Total Zinc (Zn) | mg/L | <0.001 | <0.001 | <0.001 | <0.001 | 3 |
Total Chromium (Cr) | mg/L | 0.130 | 0.020 | 0.076 | 0.056 | 0.5 |
Total Magnesium (Mg) | mg/L | 2.504 | 1.178 | 0.600 | 0.500 | 150 |
Total Lead (Pb) | mg/L | <0.001 | <0.001 | <0.001 | <0.001 | 0.5 |
Total Arsenic (As) | mg/L | <0.001 | <0.001 | <0.001 | <0.001 | 0.1 |
Mercury (Hg) | mg/L | <0.001 | <0.001 | <0.001 | <0.001 | 0.005 |
Nutrients |
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Nitrate | mg/L | 16.475 | 0.845 | 0.795 | 1.05 | 10 |
Phosphate | mg/L | 9.720 | 5.962 | 8.381 | 2.416 | 5 |
Sulphate | mg/L | 109.975 | 140.689 | 102.117 | 42.12 | 250 |