The City Water Map (CWM), version 2.2, contains information on the water sources for cities internationally. For surface or alluvial groundwater sources, the upstream contributing area is defined. To ease use of the database, information on the spatial locations of the cities shown is also provided. For some cities, information is also available on how wastewater is treated and released, although this part of the database has not been fully developed. The CWM was used as part of a SNAPP working group on Latin America water security. It was also used as part of the Urban Water Blueprint analysis.