Water demand management for an urban area: the case study of Dwarka, a sub-city of Delhi

摘要

As a consequence of urbanization and associated environmental impacts, the issue of providing water to the growing urban population of India is becoming critical. Traditionally the solution has been to draw increasing volumes of water into cities and discharge waste at ever increasing levels to the receiving environment. This approach has been found inadequate for water deficient urban environments in India, so there is urgent need to change from the existing supply side approach to an alternative water demand management approach. RABIDYUTI BISWAS, DEEPAK KHARE and RAMASURBRAMANIAM SHANKAR in this paper aim to review some of the demand management techniques from case studies across the world and their applicability to India. Some of these techniques like water harvesting and wastewater recycling are already mandatory in Dwarka, a sub-city of Delhi, but rarely in practice, therefore to demonstrate the benefit of these techniques Dwarka has been considered as case study.