Environment

Where is California water use decreasing?

Produced by Molly Peterson, Aaron Mendelson & Chris Keller | Updated May 5, 2015

Efforts to conserve water improved somewhat in California in March but were still well below the cuts officials are calling for as the state suffers through its fourth year of drought.

California used just 3.6 percent less water in March than it did the same month a year earlier.

This March was unusually warm and dry, but state water officials had been hoping for a bigger reduction given the severity of California's ongoing water shortage. On April 1, Gov. Jerry Brown issued an executive order calling on California cities to reduce their water use 25 percent by the end of the next February.

Choose your water agency

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 2015 reporting period, and compared to the baseline measure from the same month in 2013. 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 decreased in March 2015 to an average of 64.06 gallons in the Central Coast hydrologic region. That number is compared to the March 2013 baseline. Click here to see proposed reductions for this region. Use the chart below to see how the 29 agencies in this region performed.

Colorado River

Daily per capita residential water use decreased in March 2015 to an average of 160.87 gallons in the Colorado River hydrologic region. That number is compared to the March 2013 baseline. Click here to see proposed reductions for this region. Use the chart below to see how the 14 agencies in this region performed.

North Coast

Daily per capita residential water use increased in March 2015 to an average of 62.66 gallons in the North Coast hydrologic region. That number is compared to the March 2013 baseline. Click here to see proposed reductions for this region. Use the chart below to see how the 15 agencies in this region performed.

North Lahontan

Daily per capita residential water use decreased in March 2015 to an average of 58.39 gallons in the North Lahontan hydrologic region. That number is compared to the March 2013 baseline. Click here to see proposed reductions for this region. Use the chart below to see how the 5 agencies in this region performed.

Sacramento River

Daily per capita residential water use decreased in March 2015 to an average of 100.95 gallons in the Sacramento River hydrologic region. That number is compared to the March 2013 baseline. Click here to see proposed reductions for this region. Use the chart below to see how the 40 agencies in this region performed.

San Francisco Bay

Daily per capita residential water use decreased in March 2015 to an average of 63.43 gallons in the San Francisco Bay hydrologic region. That number is compared to the March 2013 baseline. Click here to see proposed reductions for this region. Use the chart below to see how the 46 agencies in this region performed.

San Joaquin River

Daily per capita residential water use decreased in March 2015 to an average of 96.33 gallons in the San Joaquin River hydrologic region. That number is compared to the March 2013 baseline. Click here to see proposed reductions for this region. Use the chart below to see how the 29 agencies in this region performed.

South Coast

Daily per capita residential water use decreased in March 2015 to an average of 85.45 gallons in the South Coast hydrologic region. That number is compared to the March 2013 baseline. Click here to see proposed reductions for this region. Use the chart below to see how the 174 agencies in this region performed.

Tulare Lake

Daily per capita residential water use decreased in March 2015 to an average of 102.52 gallons in the Tulare Lake hydrologic region. That number is compared to the March 2013 baseline. Click here to see proposed reductions for this region. Use the chart below to see how the 27 agencies in this region performed.

South Lahontan

Daily per capita residential water use decreased in March 2015 to an average of 93.55 gallons in the South Lahontan hydrologic region. That number is compared to the March 2013 baseline. Click here to see proposed reductions for this region. Use the chart below to see how the 18 agencies in this region performed.

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