Urban water scarcity occurs when gaps exist between supply and demand of available freshwater resources . Urban water security requires a sustainable quantity and quality of water to meet community and ecosystem needs in a changing climate . Risks arising from urban water scarcity worldwide are very likely increasing due to climate drivers  and urbanisation processes  affecting supply and demand  . Flörke et al.  estimates that nearly a third of all major cities worldwide may exhaust their current water resources by 2050. Globally, projections suggest that 350 million  more people living in urban areas will be exposed to water scarcity from severe droughts at 1.5℃ warming and 410.7 million  at 2°C warming .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report