This statistic represents the proportion of the world's population with access to drinking water sources from 1990 to 2017, based on the quality of the drinking water source. In 1990, around 76 percent of the world's population had access to improved drinking water sources, this figure stood at 93 percent in 2017.
Proportion of the world's population with access to drinking water sources from 1990 to 2017, based on quality of water source*
Figures were compiled from several editions of the report. According to the source, improved drinking water sources are those that are protected from outside contamination, particularly faecal matter. However, some of these sources may not be adequately maintained and therefore may not actually provide “safe” drinking water. Thus, the number of people using such sources may have been over-estimated.
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UNICEF, & WHO. (June 15, 2019). Proportion of the world's population with access to drinking water sources from 1990 to 2017, based on quality of water source* [Graph]. In Statista. Retrieved February 22, 2020, from https://www.statista.com/statistics/278656/quality-of-the-global-drinking-water-supply/
UNICEF, und WHO. "Proportion of the world's population with access to drinking water sources from 1990 to 2017, based on quality of water source*." Chart. June 15, 2019. Statista. Accessed February 22, 2020. https://www.statista.com/statistics/278656/quality-of-the-global-drinking-water-supply/
UNICEF, WHO. (2019). Proportion of the world's population with access to drinking water sources from 1990 to 2017, based on quality of water source*. Statista. Statista Inc.. Accessed: February 22, 2020. https://www.statista.com/statistics/278656/quality-of-the-global-drinking-water-supply/
UNICEF, and WHO. "Proportion of The World's Population with Access to Drinking Water Sources from 1990 to 2017, Based on Quality of Water Source*." Statista, Statista Inc., 15 Jun 2019, https://www.statista.com/statistics/278656/quality-of-the-global-drinking-water-supply/
UNICEF & WHO, Proportion of the world's population with access to drinking water sources from 1990 to 2017, based on quality of water source* Statista, https://www.statista.com/statistics/278656/quality-of-the-global-drinking-water-supply/ (last visited February 22, 2020)
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