California Drought Updates and Information



Gov. Jerry Brown issued an Executive Order requiring mandatory water conservation of potable urban water use on April 1, 2015. ­It will be in effect for 270 days.


The CA State Water Board proposed a framework for reaching the 25% reduction mandated by the Executive Order. The State is trying to save 1.3MM acre-feet of water.

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CA State Water Board - Fact Sheet for 25% Reduction in Potable Urban Water Use - Updated 4.28.15 - Updated 4.28.15

Here are some highlights:

  • ­The State is strongly focused on curtailing outdoor irrigation
  • Many communities have already decreased their Residential Gallons Per Capita Per Day (R-GPCD) substantially. These communities may be assigned a Conservation Standard or reduction target of 4-24%
  • For those communities who have been less water efficient, their Conservation Standard may be as high as 36%


R-GPCD table


  • If you are an urban water supplier serving more than 3,000 customers and delivering more than 3,000 AF per year, you will be assigned a conservation standard
  • Smaller water providers will have to reduce usage by 25% and limit outdoor irrigation to no more than two days per week

­There are some carveouts for suppliers to request a modification to their total water use. They apply to providers that:

  • Deliver more than 20% of their water to commercial agriculture
  • Have a reserve supply of surface water that will last several years

­Irrigating public street medians with potable water is prohibited, as is irrigating without using a drip or microspray system.


New Reporting Requirements

Water suppliers will have to report:

  • Total monthly water production
  • Residential use values
  • Commercial, industrial, and institutional sector data

­Suppliers must start demonstrating compliance by submitting their June 2015 report by July 15, 2015.

­Here's a table comparing monthly savings to cumulative/running savings:

Monthy vs running cumulative savings



If suppliers don't meet their conservation standards, the State can:

  • Demand immediate enforcement
  • Assess penalties of up to $500/day

­If a supplier is not meeting the targets, the State could work with the organization and implement actions that include:

  • Rate/pricing changes
  • Outdoor irrigation restrictions
  • Public outreach
  • Rebates and audit programs
  • Leak detection and repair
  • Other?


Calculating R-GPCD

R-GCPD = [ (TMP*PRU*C) / TPS ] / number of days in the month


  1. TMP=Total Monthly Potable Water Production
  2. PRU=Percent Residential Use
  3. C=Unit Conversion Factor
  4. TPS=Total Population Served

The State offers an Urban Water Supplier Reporting Tool here: