The Sacramento Bee reported Thursday that the San Juan Water District board of directors approved the move this week.
The district serves more than 265,000 people in the Sacramento suburbs, including the communities of Citrus Heights, Orangevale and Folsom.
Most of its water comes from Folsom Reservoir, which the newspaper says has shrunk perilously low amid one of the driest winters in California history.
District General Manager Shauna Lorance says the call for conservation is not mandatory, but it could become so next month if the area doesn't get rain soon.
The district also is extending a request for a 20 percent cut in all water use that has been in place for months.
California water regulators are praising some Sacramento-San Joaquin Delta farmers for coming up with a program to voluntarily cut water use.
(AP) - A deadly parasite is thriving in the drought, infecting all the juvenile chinook salmon in the Klamath River in Northern California as they prepare to migrate to the ocean.
The State Water Resources Control Board is considering whether to allow some farmers in the Sacramento-San Joaquin Delta to voluntarily cut back their water use. In exchange, they want the board to agree not to curtail their remaining water.
After it was called off in 2014 due to the drought, Old Town Sacramento's Gold Rush Days is back in 2015.
For the first time in its history, the city of Roseville is limiting outdoor watering to two days a week.