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. 2018 May 21;11(1):321.
doi: 10.1186/s13104-018-3445-z.

Investigating aquifer contamination and groundwater quality in eastern Terai region of Nepal

Sanjay Mahato  1   2 , Asmita Mahato  3 , Pankaj Kumar Karna  4 , Nisha Balmiki  3
Affiliations

Investigating aquifer contamination and groundwater quality in eastern Terai region of Nepal

Sanjay Mahato et al. BMC Res Notes. .

Abstract

Objective: This study aims at assessing the groundwater quality of the three districts of Eastern Terai region of Nepal viz. Morang, Jhapa, Sunsari using physicochemical characteristics and statistical approach so that possible contamination of water reservoir can be understood. pH, temperature, conductivity, turbidity, color, total dissolved solids, fluorides, ammonia, nitrates, chloride, total hardness, calcium hardness, calcium, magnesium, total alkalinity, iron, manganese, arsenic have to be analyzed to know the present status of groundwater quality.

Results: Results revealed that the value of analyzed parameters were within the acceptable limits for drinking water recommended by World Health Organization except for pH, turbidity, ammonia and iron. As per Nepal Drinking Water Quality Standards, fluoride and manganese too were not complying with the permissible limit. Electrical conductivity, total dissolved solids, chloride, total hardness, calcium hardness, manganese, and total alkalinity show good positive correlation with major water quality parameters. Calcium, magnesium, total hardness, calcium hardness and total alkalinity greatly influences total dissolved solids and electrical conductivity. ANOVA, Tukey, and clustering highlight the significance of three districts. Groundwater can be considered safe, but there is always a chance of contamination through chemical wastes in the heavily industrialized area of Morang and Sunsari Industrial corridor.

Keywords: Groundwater; Nepal; Physicochemical; Terai.

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Figures

Fig. 1
Fig. 1
Study area in Eastern Terai of Nepal namely Sunsari, Morang, Jhapa. (Map cited from https://en.wikipedia.org/wiki/List_of_districts_of_Nepal)
See this image and copyright information in PMC

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