Global Burden of Disease Study 2021 (GBD 2021) Unsafe Water Exposure Estimates 1990-2021

The Global Burden of Disease Study 2021 (GBD 2021), coordinated by the Institute for Health Metrics and Evaluation (IHME), estimated the burden of diseases, injuries, and risk factors for 204 countries and territories and selected subnational locations. This dataset contains unsafe water exposure estimates by for 1990-2021. Exposure to unsafe water is defined based on the primary water source used and the use of water treatment to improve water quality. Primary water sources include basic piped (fecal contaminated piped water), improved (including boreholes, tube wells, protected wells, and packaged or delivered water), and unimproved (including unprotected springs, unprotected wells, and surface water). Water treatment methods include boil/filter, solar/chlorine, and no treatment. Estimates include both the proportion of the population and number of individuals exposed.