Environment

Where is California water use decreasing?

Produced by Aaron Mendelson & Chris Keller | Updated July 8, 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 2016 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

Daily per capita residential water use increased in May 2016 to an average of 69.25 gallons for the 29 agencies in the Central Coast hydrologic region. That number is compared to the April 2016 daily per capita residential water use of 62.53. Use the chart below to see how the 29 agencies in this region performed. Click here to see enforcement statistics for water agencies in this region. Click here to see reduction targets for water agencies in this region.

Colorado River

Daily per capita residential water use increased in May 2016 to an average of 144.18 gallons for the 14 agencies in the Colorado River hydrologic region. That number is compared to the April 2016 daily per capita residential water use of 129.47. Use the chart below to see how the 14 agencies in this region performed. Click here to see enforcement statistics for water agencies in this region. Click here to see reduction targets for water agencies in this region.

North Coast

Daily per capita residential water use increased in May 2016 to an average of 61.39 gallons for the 14 agencies in the North Coast hydrologic region. That number is compared to the April 2016 daily per capita residential water use of 54.83. Use the chart below to see how the 14 agencies in this region performed. Click here to see enforcement statistics for water agencies in this region. Click here to see reduction targets for water agencies in this region.

North Lahontan

Daily per capita residential water use increased in May 2016 to an average of 78.45 gallons for the 5 agencies in the North Lahontan hydrologic region. That number is compared to the April 2016 daily per capita residential water use of 57.68. Use the chart below to see how the 5 agencies in this region performed. Click here to see enforcement statistics for water agencies in this region. Click here to see reduction targets for water agencies in this region.

Sacramento River

Daily per capita residential water use increased in May 2016 to an average of 120.79 gallons for the 41 agencies in the Sacramento River hydrologic region. That number is compared to the April 2016 daily per capita residential water use of 91.67. Use the chart below to see how the 41 agencies in this region performed. Click here to see enforcement statistics for water agencies in this region. Click here to see reduction targets for water agencies in this region.

San Francisco Bay

Daily per capita residential water use increased in May 2016 to an average of 66.29 gallons for the 46 agencies in the San Francisco Bay hydrologic region. That number is compared to the April 2016 daily per capita residential water use of 57.72. Use the chart below to see how the 46 agencies in this region performed. Click here to see enforcement statistics for water agencies in this region. Click here to see reduction targets for water agencies in this region.

San Joaquin River

Daily per capita residential water use increased in May 2016 to an average of 106.87 gallons for the 27 agencies in the San Joaquin River hydrologic region. That number is compared to the April 2016 daily per capita residential water use of 83.80. Use the chart below to see how the 27 agencies in this region performed. Click here to see enforcement statistics for water agencies in this region. Click here to see reduction targets for water agencies in this region.

South Coast

Daily per capita residential water use increased in May 2016 to an average of 80.54 gallons for the 173 agencies in the South Coast hydrologic region. That number is compared to the April 2016 daily per capita residential water use of 76.14. Use the chart below to see how the 173 agencies in this region performed. Click here to see enforcement statistics for water agencies in this region. Click here to see reduction targets for water agencies in this region.

South Lahontan

Daily per capita residential water use increased in May 2016 to an average of 116.55 gallons for the 17 agencies in the South Lahontan hydrologic region. That number is compared to the April 2016 daily per capita residential water use of 97.83. Use the chart below to see how the 17 agencies in this region performed. Click here to see enforcement statistics for water agencies in this region. Click here to see reduction targets for water agencies in this region.

Tulare Lake

Daily per capita residential water use increased in May 2016 to an average of 128.25 gallons for the 30 agencies in the Tulare Lake hydrologic region. That number is compared to the April 2016 daily per capita residential water use of 99.16. Use the chart below to see how the 30 agencies in this region performed. Click here to see enforcement statistics for water agencies in this region. Click here to see reduction targets for water agencies in this region.

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