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

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