CORRELATION OF VARIOUS PHYSICO-CHEMICAL PARAMETERS AND WATER QUALITY INDEX (WQI) OF CHANDOLA LAKE, AHMEDBAD, GUJARAT, INDIA
A systematic study has been carried out to assess the Water Quality Index of Chandola Lake, Ahmedabad, Gujarat, India. Water samples from ten sampling sites were collected and analyzed for physico-chemical parameters (electrical conductivity, total dissolved solids, pH, dissolved oxygen, alkalinity, total hardness, calcium, magnesium, chloride, nitrate and biological oxygen demand). The study area experiences a seasonal climate and broadly divided into three seasons as monsoon (June to September), winter (October to January) and summer (March to May). The samples were collected and analyzed for one year from September 2013 to August 2014. Each parameter was compared with the standard desirable limit of that parameter in lake water as prescribed by different agencies. The analytical data of various physico-chemical parameters indicates that some parameters like total dissolved solids, pH, alkalinity, total hardness and calcium was beyond the permissible limit according to WHO and BIS standards for drinking purpose in the year. The WQI value indicates that water samples of summer and monsoon season were unsuitable for drinking.
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