ISSN : 2348 - 8948

Current Issue

Volume : 5 Issue :12 Month : December (2017)
Page Numbers : 467-464

ASSESSMENT OF WATER QUALITY INDEX (WQI) AND SUITABILITY OF SAGAR DIGHI, KOCH BIHAR, WEST BENGAL, INDIA

Abdul Miraj*, Sudip Kumar Bhattacharya
The aim of the study was to find out the Water Quality Index (WQI) of Koch Bihar Lake or Sagar Dighi in order to assess its suitability for drinking, bathing and swimming purposes. Water sample were collected in three bottles, two glass bottles with the capacity of 100 ml each and one large PVC (1 litter capacity) bottle for laboratory analysis. Total 20 bio-physico-chemical parameters were used for WQI calculation for drinking purpose and six physico-chemical parameters were used for WQI calculation for bathing and swimming purposes. The calculation of the WQI was done using weighted arithmetic water quality index which was originally proposed by Horton (1965) and developed by Brown et al (1972). The WQI of Sagar Dighi obtained for drinking and Bathing/ recreational use indicates Unsuitable for drinking and poor quality for humans uses respectively. We therefore strongly recommend that an urgent effort must be taken to develop ecosystem-based management strategies.
 
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