The problem of water scarcity in urban areas of developing countries is a major concern. It is estimated that by 2050, half of India’s population will be living in urban areas and will face acute water problems (Singh, 2000). It was reported in 2002 that about 1.1 billion people were still using water from unimproved sources, and two thirds of these people live in Asia. The number of people without improved water sources in China alone is equal to the number of un-served in all of Africa (UNICEF/ WHO, 2004). The quality of water that people receive is also questionable. In India, eighty-five per cent of urban population has access to drinking water but only 20 per cent of the available drinking water meets the health and quality standards set by the world health organisation (WHO)(Singh, 2000)