Major focus of the research is to study the regional eco-hydrological changes over a period of time from 2000 to 2014 in terms of both quantity and quality to evolve sustainable pattern for protecting tank ecosystems and livelihoods of the community with IWRM perspectives. Various threats that deteriorate the conserved quantity and quality of water are assessed using primary and secondary data. The water quality analysis of tanks and the wells are done for two seasons. The Irrigation water quality indices are computed for four tanks, bore wells and open wells and compared with standards. The water quality results show that Pandravedu tank and the wells in its ayacut area are affected due to mixing of untreated dyeing industry wastewater and sewage water. Focussed group discussion revealed that due to water quality changes in Pandravedu tank there is reduction in paddy yield to about 40%, the water is also not suitable for livestock drinking, fish culture, and drinking purposes and hence community depend on other fresh water sources. These changing scenarios clearly reveal that the livelihoods of the community and tank ecosystem are under severe threat which needs immediate solution for future sustainability.
