HYDROGEOCHEMICAL ASSESSMENT OF GROUNDWATER QUALITY IN VICINITY OF DWARKA, DELHISANIGDHA ACHARYA, S.K. SHARMA AND VINITA KHANDEGARAbstract Groundwater is a major source of human survival and its quality degradation due to rapid urbanization and industrialization has become a major issue of todays era. The evaluation of water quality parameters should be carried out periodically to help policy makers and environmentalists to have better water quality management practices and ensure safe drinking water for all. In the present study, physico-chemical characteristics of groundwater samples from Dwarka and nearby areas, Delhi, were assessed to find its suitability for drinking purposes. A total 44 sampling locations were recorded with the help of global positioning system. To assess the ground water quality, water samples were analyzed for different parameters such as pH, temperature, colour, electrical conductivity, total dissolved solids, salinity, total hardness, alkalinity, copper, chromium, nickel, nitrates and chlorides. Water Quality Index (WQI) was calculated using weighted arithmetic index method. Correlation matrix was also determined to investigate the degree of linear association between different hydrogeochemical water quality parameters. Based on WQI, it was observed that 20 % samples were of excellent to good while 80 % were of very poor to unsuitable quality. This indicates that groundwater from large areas was not fit for drinking/domestic purposes and need treatment before use.
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