Kamal Katwal, Aadarsha Thapa, Bidek Pokharel, Nischal Ghimire, Urusha Dhungana and Kirti Dhungana 2025. Assessment of Groundwater Quality in the Kathmandu Valley: A Spatial and Physicochemical Analysis: DOI: https://doi.org/10.46610/JoEES.2025.v010i03.005 . Journal of Environmental Engineering and Studies. (Nov. 2025), 45–68.