State Water Board adopts ‘stress test’ approach to water conservation regulation

MAVEN’S NOTEBOOK

The State Water Resources Control Board today adopted a statewide water conservation approach that replaces the prior percentage reduction-based water conservation standard with a localized “stress test” approach that mandates urban water suppliers act now to ensure at least a three year supply of water to their customers under drought conditions.

Recognizing persistent yet less severe drought conditions throughout California, the newly adopted emergency regulation will replace the Feb. 2 emergency water conservation regulation that set specific water conservation benchmarks at the state level for each urban water supplier. Today’s adopted regulation, which will be in effect through January 2017, requires locally developed conservation standards based upon each agency’s specific circumstances.

These standards require local water agencies to ensure a three-year supply assuming three more dry years like the ones the state experienced from 2012 to 2015.  Water agencies that would face shortages under three additional dry years will be required to meet a conservation standard equal to the amount of shortage. For example, if a water agency projects it would have a 10 percent supply shortfall, their mandatory conservation standard would be 10 percent.

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