This statistic represents the proportion of the world's population with access to water sources in 1990 and 2011, by type of water source. In 1990, around ** percent of the world's population had access to surface water.
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WHO, & UNICEF. (March 30, 2013). Proportion of the world's population with access to water sources in 1990 and 2011, by type of water source [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 20, 2026, from /statistics/278657/world-drinking-water-coverage-by-type-of-water-available/
WHO, und UNICEF. "Proportion of the world's population with access to water sources in 1990 and 2011, by type of water source." Chart. March 30, 2013. ÌÇÐÄÆƽâ°æ. Accessed July 20, 2026. /statistics/278657/world-drinking-water-coverage-by-type-of-water-available/
WHO, UNICEF. (2013). Proportion of the world's population with access to water sources in 1990 and 2011, by type of water source. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 20, 2026. /statistics/278657/world-drinking-water-coverage-by-type-of-water-available/
WHO, and UNICEF. "Proportion of The World's Population with Access to Water Sources in 1990 and 2011, by Type of Water Source." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 30 Mar 2013, /statistics/278657/world-drinking-water-coverage-by-type-of-water-available/
WHO & UNICEF, Proportion of the world's population with access to water sources in 1990 and 2011, by type of water source ÌÇÐÄÆƽâ°æ, /statistics/278657/world-drinking-water-coverage-by-type-of-water-available/ (last visited July 20, 2026)
Proportion of the world's population with access to water sources in 1990 and 2011, by type of water source [Graph], WHO, & UNICEF, March 30, 2013. [Online]. Available: /statistics/278657/world-drinking-water-coverage-by-type-of-water-available/
