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

BMC Research Notes

Nisha Balmiki¹  Asmita Mahato¹  Sanjay Mahato¹  Pankaj Kumar Karna² 

[1] Aasra Research and Education Academy Counsel;Nepal Batawaraniya Sewa Kendra;

关键词: Physicochemical;    Terai;    Nepal;    Groundwater;   

DOI  :  10.1186/s13104-018-3445-z

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown