• Mr. Bishnu Dev Das
• Dr. Sunil Kumar Choudhary
• Dr. Ranjan Kumar Mishra

Abstract:The abiotic and biotic examinations of ground water in Biratnagar city area were carried out to assess its quality on the basis of seasonal variations during post-monsoon(2015) and pre-monsoon(2016) period as unsafe drinking water is one of the major concerns in developing countries. Groundwater quality was determined by the examinations of some important water quality parameters such as temperature, pH, turbidity, electrical conductivity (EC), free carbon-dioxide (FCO2), bi-carbonate (HCO3), total hardness (TH), phosphate (PO4-P), Nitrate-nitrogen (NO3-N), Arsenic (As), Fluoride (Fl), Iron (Fe), Manganese (Mn), Cadmium (Cd), Zinc (Zn), Lead (Pb) as well as microbiological contamination level. From the present study, it was evident that most of the water quality parameters analyzed were within the WHO, BIS (Bureau of Indian Standards) and NDWQS (National Drinking Water Quality Standards-Nepal) limits for drinking water. Out of the total analyzed samples, the values of turbidity (67.27% in post-monsoon and 33.63% in pre-monsoon), Arsenic (38.18% in post monsoon and 52.72% in pre-monsoon), Fe and Mn (100% in both the seasons),) and microbial status (13.64%) in ground water samples exceeded the WHO guidelines.

Groundwater, Physico-chemical parameters, trace metals, fecal coliform, Biratnagar, Nepal

"Seasonal Variations in Physicochemical Properties with Trace Metals and Microbial Status in Groundwaters of Biratnagar, Nepal", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 7, page no.153-166, July-2018, Available :http://www.jetir.org/papers/JETIR1807375.pdf

"Seasonal Variations in Physicochemical Properties with Trace Metals and Microbial Status in Groundwaters of Biratnagar, Nepal", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 7, page no. pp153-166, July-2018, Available at : http://www.jetir.org/papers/JETIR1807375.pdf