Global Water Quality Data and Statistics (GEMStat) from UNEP Global Environmental Monitoring System (GEMS) Water Programme

The United Nations Environment Programme Global Environment Monitoring System (GEMS) Water Programme is a multi-faceted water science centre oriented towards building knowledge on inland quality issues worldwide. The twin goals of the programme are to improve water quality monitoring and assessment capacity in participating countries, and to determine the state and trends of regional and global water quality. GEMStat.org is designed to provide access to surface and groundwater quality data and statistics collected from the GEMS/Water Global Network, and warehoused in a global water quality database called GEMStat. The Global Network covers over 80 countries, 1,400 stations, two million records, and over 100 parameters.