SACRAMENTO, Calif. (CBS13/AP) — Californians failed to significantly cut back their water consumption in July, state officials announced Tuesday, foreshadowing some difficult decisions for Gov. Gavin Newsom’s administration as an historic drought lingers into the fall.

Newsom had asked people in July to voluntarily cut back their water consumption by 15% to help address a severe drought that has left some of the state’s reservoirs at dangerously low levels.

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But in the three weeks after Newsom’s announcement, residents reduced their water consumption just 1.8%, according to new data released Tuesday and reported by the Sacramento Bee.

“On conservation, we’re going to be needing to do more,” board chair Joaquin Esquivel said.

Still, Esquivel was hopeful the state’s conservation numbers will improve. Newsom declared a drought emergency in the Russian River watershed along the state’s north coast in April. Data from that region shows people reduced their water consumption by 17% compared in July compared to 2020.

“We see that it takes time for conservation to boot up,” Esquivel said, adding that the 17% figure “shows the responsiveness of communities” to appeals for conservation.

Dave Eggerton, executive director of the Association of California Water Agencies, said the numbers “represent a promising start in reducing water use,” saying water agencies are “ramping up public information campaigns to build on that progress.”

The numbers released Tuesday represent only about three weeks’ worth of data. And Californians are using about 15% less water per capita than they were in 2014.

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But this drought has strained water resources like never before. Several of the state’s largest reservoirs are already at record lows. The water level is so low in Lake Oroville that officials had to shutter a hydroelectric power plant for the first time ever.

Still, Newsom has declined to impose mandatory water restrictions. Newsom’s predecessor, former Gov. Jerry Brown, imposed mandatory 25% water restrictions during the previous drought. The Newsom administration has signaled water restrictions could come if the drought persists.

Department of Water Resources Director Karla Nemeth said officials are planning for “a worst-case scenario in terms of water availability” for the state’s three largest reservoirs.

The City of Sacramento declared a “Stage 2 Water Alert” in August, calling on residents to reduce water usage by 15% to relieve pressure on the Lower American River and Folsom Reservoir as the state continue’s to experience extreme drought conditions.

Under the Stage 2 declaration, water waste fines will be doubled and car washing will be restricted to watering days only.

Additionally, the city manager has been authorized to transfer $1.8 million from the Water Fund in order to balance the Water Conservation Multi-Year Operating Project.

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(© Copyright 2021 CBS Broadcasting Inc. All Rights Reserved. The Associated Press contributed to this report.)