were also collected from two stations, i.e. one near the residential area nearer to the mines and another in the mining area.
materials and methods
water samples were collected using 3 litre polythene bottles with stopper. each of the boltles were washed with 2% Nitric acid and then rinsed with distilled water. the bottles were then preserved in a clean place. Prior to sampling, the bottles were rinsed thoroughly with the water of the source from which the samples were to be collected. the samples were then brought to the laboratory for physico-chemical analysis.