Hussain sagar lake, a historical lake which was built in 1562 by Hussain Shaw Wali is situated in the heart of Hyderabad city, India. Earlier up to 1930's, it was the major water source to meet drinking and irrigation requirements for both twin cities of Hyderabad and Secunderabad. Now this lake turned to virtual garbage bin with no adequate treatment for wastewater loads originated from point and non point sources. Therefore the lake loses the capability of self purification system which was an important factor that depends on the maximum uptake of oxygen from the atmosphere. Multiple projects were undertaken by the concerned authorities for the improvement of Hussain sagar lake and its catchment area. Recently With referring to the Lake health status, In 2006, HMDA, a governing body set up by Andhra Pradesh Government, initiated “Hussainsagar Lake and Catchment Area Improvement project” and set up STPs and wastewater interception and diversion structures. It also installed fountains to aerate the lake to improve its water quality as well as to add beauty. But these measures are lying ineffective to manage wastewater loads.
This paper discusses that the Hussain Sagar lake water body over decades, has been polluted adversely from discharging of organic and inorganic pollutants through open drains as well as point and non point sources and also presents various measures had taken to rejuvenate Hussain Sagar Lake to its past glory.