Environment

Is California water use increasing?

Produced by Aaron Mendelson & Chris Keller | Updated Sept. 7, 2016

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About the data: These charts show the daily per capita residential water use rate in California as calculated by the State Water Resources Control Board. The charts cover the May 2017 reporting period, and are compared to the previous month unless specified. Since the per capita measure (which reflects gallons of water used per resident per day) does not take into account rainfall, temperature, humidity and population density, the State Water Resources Control Board discourages comparisons between water suppliers.

Central Coast

For the 29 agencies in this region the average daily water consumption by each residential customer increased to 73.48 gallons in May 2017 compared to 60.24 gallons in April 2017.

Colorado River

For the 13 agencies in this region the average daily water consumption by each residential customer increased to 170.35 gallons in May 2017 compared to 162.77 gallons in April 2017.

North Coast

For the 14 agencies in this region the average daily water consumption by each residential customer increased to 67.17 gallons in May 2017 compared to 54.46 gallons in April 2017.

North Lahontan

For the 5 agencies in this region the average daily water consumption by each residential customer increased to 92.42 gallons in May 2017 compared to 65.46 gallons in April 2017.

Sacramento River

For the 42 agencies in this region the average daily water consumption by each residential customer increased to 138.72 gallons in May 2017 compared to 76.08 gallons in April 2017.

San Francisco Bay

For the 46 agencies in this region the average daily water consumption by each residential customer increased to 73.59 gallons in May 2017 compared to 55.44 gallons in April 2017.

San Joaquin River

For the 27 agencies in this region the average daily water consumption by each residential customer increased to 122.59 gallons in May 2017 compared to 78.62 gallons in April 2017.

South Coast

For the 171 agencies in this region the average daily water consumption by each residential customer increased to 88.20 gallons in May 2017 compared to 84.26 gallons in April 2017.

South Lahontan

For the 17 agencies in this region the average daily water consumption by each residential customer increased to 116.08 gallons in May 2017 compared to 100.28 gallons in April 2017.

Tulare Lake

For the 28 agencies in this region the average daily water consumption by each residential customer increased to 150.85 gallons in May 2017 compared to 105.35 gallons in April 2017.

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