Physico-Chemical Study of Kolar Reservoir on its Potable Quality

The aim of the current study was to gain a thorough knowledge on the trophic status of Kolar reservoir. Variation in physico-chemical parameters of ambient water were assessed over a period of 1 year (January to December) on monthly basis in Kolar reservoir. In the present study pH varied from 7.1 - 8.3 units, turbidity from 2 - 8 NTU, total dissolved solids from 115 - 156 mg/l, Specific conductivity from 177 - 240 mg//l, dissolved oxygen from 4.4 7.6 mg/l, Total hardness from 39 62 mg/l, total alkalinity from 100 -132 mg/l, chloride from 9 -19 mg/l, nitrate from 0.008 0.53 mg/l and Phosphate phosphorous from 0.0005 0.173 mg/l. The results indicated that the physico-chemical parameters of the water body were within the permissible limits and as such the water from the Kolar reservoir can be used for drinking, and domestic purpose.