Idaho had one of the largest per capita uses of the public water supply in the United States, totaling 184 gallons per day, followed by Utah with 169 gallons and Wyoming at 156 gallons. The public supply of water refers to water that is withdrawn by both public and private suppliers and is delivered to domestic, commercial, thermoelectric, irrigation, and industrial users. Overall, the most populous states tend to be the largest consumers of water. Sources of public supply water can include desalinated seawater and treated brackish groundwater. California and Texas withdrew 5.15 billion gallons and 2.89 billion gallons per day, respectively, for public supply in 2015. Almost 90 percent of the U.S. population relies on public water supplies.
Public water supply per capita use in the U.S. in 2015, by select state
(in gallons per day)
Characteristic
Per capita use in gallons per day
Idaho
184
Utah
169
Wyoming
156
Arizona
145
Hawaii
144
Nevada
126
Colorado
123
Louisiana
115
Oregon
107
Montana
106
Created with Highcharts 7.2.2Per capita use in gallons per day184184169169156156145145144144126126123123115115107107106106IdahoUtahWyomingArizonaHawaiiNevadaColoradoLouisianaOregonMontana
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US Geological Survey. (September 25, 2018). Public water supply per capita use in the U.S. in 2015, by select state (in gallons per day) [Graph]. In Statista. Retrieved January 21, 2025, from https://www.statista.com/statistics/194176/public-water-supply-per-capita-use-by-leading-states-in-the-us/
US Geological Survey. "Public water supply per capita use in the U.S. in 2015, by select state (in gallons per day)." Chart. September 25, 2018. Statista. Accessed January 21, 2025. https://www.statista.com/statistics/194176/public-water-supply-per-capita-use-by-leading-states-in-the-us/
US Geological Survey. (2018). Public water supply per capita use in the U.S. in 2015, by select state (in gallons per day). Statista. Statista Inc.. Accessed: January 21, 2025. https://www.statista.com/statistics/194176/public-water-supply-per-capita-use-by-leading-states-in-the-us/
US Geological Survey. "Public Water Supply per Capita Use in The U.S. in 2015, by Select State (in Gallons per Day)." Statista, Statista Inc., 25 Sep 2018, https://www.statista.com/statistics/194176/public-water-supply-per-capita-use-by-leading-states-in-the-us/
US Geological Survey, Public water supply per capita use in the U.S. in 2015, by select state (in gallons per day) Statista, https://www.statista.com/statistics/194176/public-water-supply-per-capita-use-by-leading-states-in-the-us/ (last visited January 21, 2025)
Public water supply per capita use in the U.S. in 2015, by select state (in gallons per day) [Graph], US Geological Survey, September 25, 2018. [Online]. Available: https://www.statista.com/statistics/194176/public-water-supply-per-capita-use-by-leading-states-in-the-us/
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