Cities are facing a scarcity of water that is affecting millions of their inhabitants. The process of climate change will exacerbate this as it expands the number of drought periods over the years. Then there are other factors like the overdrawing of groundwater, increasing salination of water supplies, and deterioration in the quality of water, which are putting huge stress on already over-burdened water services. Most importantly, the issue of water security is emerging gradually due to the lack of adaptive strategies in the face of climate change.