Environment

Where is California water use decreasing?

Produced by Aaron Mendelson & Chris Keller | Updated April 4, 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 March 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 March 2016 to an average of 51.80 gallons for the 30 agencies in the Central Coast hydrologic region. That number is compared to the February 2016 daily per capita residential water use of 50.86. 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.

Colorado River

Daily per capita residential water use increased in March 2016 to an average of 113.24 gallons for the 13 agencies in the Colorado River hydrologic region. That number is compared to the February 2016 daily per capita residential water use of 103.20. Use the chart below to see how the 13 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 March 2016 to an average of 52.00 gallons for the 15 agencies in the North Coast hydrologic region. That number is compared to the February 2016 daily per capita residential water use of 50.44. Use the chart below to see how the 15 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 March 2016 to an average of 53.99 gallons for the 5 agencies in the North Lahontan hydrologic region. That number is compared to the February 2016 daily per capita residential water use of 52.81. 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 March 2016 to an average of 67.84 gallons for the 41 agencies in the Sacramento River hydrologic region. That number is compared to the February 2016 daily per capita residential water use of 64.53. 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 March 2016 to an average of 50.82 gallons for the 47 agencies in the San Francisco Bay hydrologic region. That number is compared to the February 2016 daily per capita residential water use of 49.20. Use the chart below to see how the 47 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 March 2016 to an average of 66.80 gallons for the 27 agencies in the San Joaquin River hydrologic region. That number is compared to the February 2016 daily per capita residential water use of 64.38. 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 decreased in March 2016 to an average of 67.52 gallons for the 174 agencies in the South Coast hydrologic region. That number is compared to the February 2016 daily per capita residential water use of 68.62. Use the chart below to see how the 174 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 March 2016 to an average of 77.88 gallons for the 17 agencies in the South Lahontan hydrologic region. That number is compared to the February 2016 daily per capita residential water use of 67.00. 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 March 2016 to an average of 79.24 gallons for the 29 agencies in the Tulare Lake hydrologic region. That number is compared to the February 2016 daily per capita residential water use of 68.12. 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.

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