Top officials with the San Diego County Water Authority on Wednesday called for the region to voluntarily cut its water use by as much as 10 percent.

The announcement by the region’s wholesaler comes after Gov. Gavin Newsom on Tuesday declared a statewide drought emergency. The state has been calling on urban water users for the last two months to voluntarily slash consumption by 15 percent — 5 percent more than the Water Authority’s new target.

The state slashed water use by 5 percent in August compared with the same month last year. But there were large disparities. While the North Coast cut its use by more than 18 percent and the San Francisco Bay Area by nearly 10 percent, Southern California as a whole reduced its water consumption by just 3 percent.