Lalitpur Sub-metropolitan City is the second largest city in Kathmandu Valley encompassing 15.43 square kilometre area. The main town popularly known as Yala in Newari and Patan in Nepali; is the main township on the North of the municipal area that dated back more than two centuries (Tiwari, S. R. 2001). Encompassed in the so called greater Kathmandu, Lalitpur is facing sever water scarcity. Apart from exploring the possibilities of augmenting the municipal supply from alternate sources, the shortage has dragged them to re-think, conserve and revive traditional water supply systems. More interesting in this venture; the government, local or the national; is taking back seat while people have come up and showed their eagerness in managing the water resource through concerns, advocacy, and organisation. Nepal the original name of Kathmandu Valley (later extended for the name of the country), was one of the famous urban centres of Asia in the historic time. Emerged as the main gateway of Indo-Tibet trade, this valley observed major settlements before Christian Era. This could be possible with knowledge, skill and management capabilities of then societies. In the ecological settings, Kirat, the then rulers utilised tar1 lands for their settlements, to leave fertile river flood plains for agriculture (Tiwari, S. R. 2002) and to protect themselves from floods and disasters. The knowledge and skills were continued and enhanced in Lichchhavi Period and further extended during Malla Period.