SEASONAL VARIATION IN PHYSICO-CHEMICAL AND MICROBIOLOGICAL PARAMETERS AS INDICATION TO SURMOUNTING POLLUTION IN SOME SELECTED WATERBODIES IN A PORT CITY IN WEST BENGALMOUMITA MAITY AND RAJARSHI BANERJEEAbstract In the present study we selected four different water bodies in Haldia area of West Bengal for physicochemical and microbiological studies for two years. The monthly details were collected and presented seasonally. Different physico-chemical parameters were taken in the study are pH varied from 6.1 to 8.9, conductivity varied from 0.366 ms/cm to 9.12ms/cm, total solids varied from 140mg/ L to 4300 mg/L, total dissolved solids varied from 30mg/L to 3780 mg/L, total suspended solids varied from 30mg/L to 3810 mg/L, B.O.D.5 varied from 0.1 to 69.5 mg/L, C.O.D varied from 20.8mg/ L to 262mg/L, chloride varied from11.99 to 599.8 mg/L, hydrogen sulfide varied from 0.85 to 18.7 mg/L and hardness varied from 96 to 1044 mg/L. Both gram +ve and gram ve microbes were found\ for all the stations in all season but colony count showed a high variation. It varied from 12 X 103 CFU/ml to 2600 X 103CFU/ml. All results are compared with the values given by WHO, (2004) and\ Indian standards so that we can understand where the immediate action should be taken and people should be concerned about the water, about their regular practices.
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