With record breaking high temperatures around the world and increasing droughts, climate change exacerbates water supply problems and thus increases the vulnerability of societies. These are the findings of the World Risk Report 2019 focused on water supply. The World Risk Report contains the annual World Risk Index, which indicates the disaster risk for 180 countries. The report is launched by the German humanitarian alliance Bündnis Entwicklung Hilft and the Institute for International Law of Peace and Armed Conflict (IFHV) of the Ruhr-University Bochum. If an extreme natural event such as a flood or a cyclone occurs, a disaster is more likely to develop in countries with poor water supply.