MICROBIAL LOAD AT TWO DIFFERENT SITES OF HOOGHLY RIVER OF WEST BENGAL, INDIAAshim Kumar NathAbstract Considering the increasing urban pollution and urban liquid waste discharge, microbial analysis of the water of river Hooghly in West Bengal was carried out over a period of one year from April, 2007 to March, 2008 at Serampore Launch Ghat area of Hooghly and Barrackpore Mangal Pandey Ghat area of North 24 Parganas, West Bengal where a large number of people take their bath regularly. The Hooghly River in the studied area receives raw sewage and domestic discharges of the townships on its banks. Water flow and duration of tide becomes reduced and drains and canals also contribute polluted water causing silt bars in the studied area. Microbial load also increased in the studied area. Physico-chemical parameters of the water were also examined. High bacterial load of coli forms in both the studied area indicates that both the studied areas are polluted. Present study revealed that river water at Barrack pore side had a lower load of total coli form and fecal coli form bacteria compared to the river water at Serampore side. The study revealed that microbial parameters exceed the permissible limits, which indicate the unpotability of water for human use.
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