Before it became a hi-tec city, Hyderabad was famously known as the city of lakes. There are over 532 water bodies in and around the state capital with Hussainsagar Lake being the most prominent one. However, rapid urbanisation in the past few decades has all but destroyed the water bodies in the city. The unending discharge of domestic and industrial effluents and sewerage has turn-ed the once-pristine lakes into cesspools. All this has also caused widespread ecological degeneration.