Saroornagar Lake

Saroornagar Lake in Hyderabad was created in 1626 for farming and drinking water. It covers 99 acres, reaches 6.1 metres at its deepest and is one of the city's five major water bodies. It stayed largely clean until 1956, when Hyderabad's rapid growth sent sewage, solid waste and industrial effluent into its catchment.

In 2003–04 the Hyderabad Urban Development Authority restored it at a cost of Rs 20 crore, installing sewage treatment plants and stopping construction on the lake bed, and within a few years migratory birds returned in large numbers. In 2007 a 5-acre park was laid out beside the water with sculptures, landscaping, boating and an environment education centre, welcomed by residents of nearby L. B. Nagar and Vanasthalipuram. Steps were also taken against pollution from the yearly immersion of Ganesh idols, but by 2009 the treatment plant's filtration was failing and domestic waste was again reaching the lake.