Gov. Gavin Newsom declared a statewide drought emergency on Tuesday, appealing to all Californians to do more to conserve water in the face of one of the state’s most severe droughts on record.

“As the western U.S. faces a potential third year of drought, it’s critical that Californians across the state redouble our efforts to save water in every way possible,” Newsom said.

While most of California’s 58 counties have been in a state of drought emergency since July, Newsom’s proclamation added the last eight remaining counties, and further bolstered his call for everyone to voluntary reduce water use by 15%. The proclamation notes that the State Water Resources Control Board may adopt emergency regulations to prohibit wasting water, such as hosing down sidewalks or driveways, allowing drinking water to flood gutters or streets, or washing a car without a shut-off nozzle.