Mineral salts content in water plays a significant role in determining the flora and fauna of that water body it helps in determining the age of the water body. Study was conduct in three prominent lakes of Bangalore. In the study conducted it showed the variation of calcium from 175.2+ 36.6 to 210.5+ 42.9 over a period of two years, Magnesium showed an variation of 113.5+ 15.2 to 213.9+ 26.5.All other nutrient too showed a sever variation.