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Water quality assessment in the lakes of Pokhara Valley, Nepal

Author Affiliations

  • 1Department of Microbiology, Prithvi Narayan Campus, Tribhuvan University, Kaski, Nepal
  • 2School of Health and Allied Sciences, Faculty of Health Science, Pokhara University, Kaski, Nepal
  • 3School of Health and Allied Sciences, Faculty of Health Science, Pokhara University, Kaski, Nepal
  • 4School of Health and Allied Sciences, Faculty of Health Science, Pokhara University, Kaski, Nepal
  • 5School of Health and Allied Sciences, Faculty of Health Science, Pokhara University, Kaski, Nepal
  • 6School of Health and Allied Sciences, Faculty of Health Science, Pokhara University, Kaski, Nepal
  • 7School of Health and Allied Sciences, Faculty of Health Science, Pokhara University, Kaski, Nepal
  • 8School of Health and Allied Sciences, Faculty of Health Science, Pokhara University, Kaski, Nepal

Int. Res. J. Environment Sci., Volume 8, Issue (1), Pages 8-15, January,22 (2019)

Abstract

The bacteriological quality of the Lakes water in Nepal is a limited issue. In the lakes of Pokhara Valley, the water quality reaching to the natural sources are highly contaminated. Water may contain many pathogenic micro-organisms from different sources and some of them may be multiple drugs resistant. The sampling method was purposive sampling method. For the quality assessment, a total of 8 Lakes (Fewa, Begnas, Rupa, Khaste, Depang, Maidi, Neureni and Gunde) were selected within the Pokhara. The study period was from January to February 2017. Water quality was assessed by different physico-chemical parameters like, temperature, pH, TDS, total hardness, alkalinity, BOD. The microbiological analysis was enumerated by membrane filtration technique. Antibiotic senesitivity test of the different isolates towards various antimicrobial discs was done by disk diffusion method. Among the total 136 Samples collected, for the study, all the parameters were on the desirable limits except that of the BOD of Fewa, Begnas, Deepang, Rupa Lakes. The total of 202 isolates of the colony shows the large number of coli form bacteria in all the lakes which suggest fecal contamination. Also most of the bacteria were found to be multiple drugs resistant. Most of the lakes were found to be seriously contaminated with marker organisms suggesting the disquieting situation of water contamination. Rapid action is desired to be taken to get better the bacteriological excellence of the lakes of Pokhara valley.

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