Urbanization is happening in very rapid pace in developing countries.Many developing failed to provide basic living requirements to its citizens. Basic living requirements include access to water, health services, education, transportation and so forth.In the context of drinking water, it is the urban population that got hit hardest. Nepal is no exception to realize drinking water deficit in urban areas. It is estimated that more than three million residents of Kathmandu demand 320 million liters of water per day. However, line-agencies have been able to meet one-fourth of the water demanded....