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.
The water conservation rate in California fell slightly in August to 27 percent. But state regulators aren’t discouraged by the numbers.
The effects of the on-going drought on Sacramento trees could mean an earlier than normal leaf drop for some tree species.
California's historic drought persists and, even with normal precipitation, is expected to continue into 2016.
A program will begin soon in the Eldorado National Forest to remove live or dead vegetation to prevent the spread of wildfires.
Most Californians are willing to sacrifice to address the drought according to a new poll by the Hoover Institution.