Ecology, Environment and Conservation Paper

ANALYSIS OF WATER QUALITY STATUS IN BORDOIBAM BILMUKH WETLAND ECOSYSTEM OF ASSAM, INDIA

Jayanta Sonowal, Kaustubh Rakshit and Debojit Baruah

Abstract

In view of current trends on deterioration of water quality in natural water bodies, a study has been conducted in Bordoibam Bilmukh wetland ecosystem from June 2018 to May 2019. For the analysis of water quality, assessment has been conducted on Temperature, pH, Conductivity, DO, BOD, Total coliform, Chloride, Nitrate, Turbidity, TDS and Total hardness of water. In monsoon season, maximum water temperature 280C and DO 8.77mg/L were observed. In post-monsoon, highest total coliform 322MNP/100 mL and total hardness 1.88mg/L were observed. In winter, maximum pH 7.7, Conductivity 657μs/cm, BOD 2.10mg/L, Chloride 1.003mg/L, Nitrate 1.387mg/L, Turbidity 15NTU and TDS335 mg/L were observed. Water conductivity (657μs/cm) in winter, BOD (8.77mg/L) in monsoon and total coliform (322 MNP/100 mL) in post-monsoon were found beyond the acceptable level of water pollution. This may be due to massive anthropogenic activities and physical disturbances received by the wetland during these periods. This paper provides important information on status of water quality and level of pollution in Bordoibam Bilmukh wetland ecosystem. These analysed parameters can be utilised by the policy makers for conservation and sustainable development of Bordoibam Bilmukh wetland ecosystem.