Immersion of painted idols and addition of organic wastes in the lake water, as a part of religious activities, is a common religious practice in India. These activities add to the contamination of water with alkali, alkaline earth metals and heavy metals and therefore, degrade water quality and limit conservation of good quality water in the lakes. In this pretext, periodic analysis of Madiwala and Lalbagh lake water were carried out to investigate the impact of idol immersion activities on the lake water quality. In Madiwala lake, the maximum concentrations of calcium and magnesium were recorded to be and ppm, respectively after one month of immersion. | Heavy metals contamination in Madiwala and Lalbagh lakes of Bengaluru Karnataka Effect of idol immersion activities
