The study has been made to evaluate the water quality of Arkavathi River at Ramanagar district. Water samples were collected from the non-polluted and polluted sites to analyze the physico-chemical parameters including temperature, pH, turbidity, electrical conductivity, total dissolved solids, chloride, hardness, ammonia, phosphate, bicarbonate, biological oxygen demand, dissolved oxygen and carbon dioxide. The results have shown that there is a significant increase in chloride, TDS and hardness level in polluted site as compared to the non-polluted site. The investigation has revealed that, the river water is polluted due to direct mixing of industrial effluents. Therefore, it has been suggested that the river water should be treated with appropriate means before being utilized for drinking or domestic purposes
