Assessment of Change in Surface Water Quality in the Nearby Area Due To Solid Waste at Sisdol Sanitary Landfill Site, Nuwakot, Nepal

[Ujjwal T. Shrestha]

Co-authors: Jaya K. Shrestha and Rohini P. Devkota

The Sisdol sanitary landfill site is situated at ward no. 4 of Okharpauwa VDC in Nuwakot district and is bordered by Kolpu Khola to the south from Dhading district and to the south east from Kathmandu district. The present study has been carried out to determine the impact of the leachate contamination on surface water nearby landfill site from December, 2007 to August, 2008. Altogether seven stations were taken viz. six sites for surface water and one for leachate.

It was found that leachate was severely polluted with most of the physicochemical parameters being higher than
the Generic standard (2003) for industrial effluent discharged into inland surface water. Compared to other seasons, the water pollution was less in monsoon season. The surface waters of all the stations are within WHO guideline (1993) and National Drinking Water Quality Guidelines (2062) from pH, TDS, hardness, chloride and nitrate-nitrogen
point of view.