<P> The three cities of Abu Dhabi Emirate within the United Arab Emirates--the coastal city Abu Dhabi itself (more than one million inhabitants) as well as the inland oases Al Ain (0, 4 million inhabitants) and Liwa (about 0, 1 million inhabitants)--receive their drinking water supply entirely from desalinated seawater . Their wastewater is being treated and reused for the irrigation of green spaces . </P> <P> There are two main sources of water in Abu Dhabi Emirate: Desalinated seawater and groundwater . While groundwater is used for agriculture in Al Ain and Liwa, drinking water is provided almost entirely from desalinated seawater across the Emirate . In 2008, groundwater contributed 71% to total water demand for all purposes, desalinated water 24% and treated wastewater 5% . </P>

How it has been possible to supply drinking water in the uae