Assessment of physicochemical parameters and metal contents of Mansagar lake of Jaipur

The state of Rajasthan of India is predominantly classified as a dry state and therefore its freshwater and agricultural resources are the prime concern for the people and the state agencies. This article presents the analytical study of physicochemical parameters of Mansagar lake Jaipur, India. Our prime objective was to find the quantity and effects of effluents mixing with the water of Jalmahal Lake (officially known as Mansagar lake). Standard approaches were applied to calculate the water quality index (WQI) for the assessment of its surface water for two consecutive years. The values of physicochemical parameters have been calculated before and after the rainy season and the study has been presented in a detailed form. The variation of parameters like COD with heavy metals like lead and zinc have been analyzed and it is found that due to the increase in metal content the COD increased as high as 500 mg/l in rainy while it is as low as 200 before the rainy season. The values of various physiochemical parameters like BOD, COD, conductivity, and turbidity were also observed throughout the year at the various front of the lake and it has been observed that pollutants presence increases in peak summer and late winters. It’s noticeable that turbidity and conductivity were normally high in June–July thereby increased pollution concentration in the remaining water levels.