STUDY OF PHYSICO-CHEMICAL CHARACTERISTICS OF WATER SAMPLES FROM ASSI RIVER, VARANASI, U.P. INDIAASHA LATA SINGHAbstract Water samples were collected from sixteen sites of historical Assi River. These water samples were analysed for various physico-chemical components (pH, TS, TDS, TSS, DO, BOD, CO2, H2S, SO4, Cl2, and PO4). The analyses reveal that phosphate, H2S and CO2 are in elevated concentrations exceeding the permissible limit while DO was found to be nil. The deficiency of oxygen indicates an anaerobic condition in the water of this river. Assi River is heavily polluted and there is urgent need to control its water quality, considering its historical importance.
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