Given the increasing water shortage in Cape Town and adjacent areas, the almost depleted surface water resources, climate change, populaton growth, and the environmental & social impacts of sourcing from alternatve resources (groundwater, desalinaton, etc.), all possible optons should be evaluated in order to provide a long term and sustainable soluton, or combinaton of solutons. With the excepton of desalinaton, all the currently considered solutons are stll reliant on rain within the Western Cape, so they remain risky optons for sustainable future supply. For instance, should there be prolonged drought, groundwater would also run out and there would not be enough water to reuse from wastewater or storm water.