Sacramento County supervisors approved a plan to provide water to the Cordova Hills project, which calls for up to 8,000 housing units and commercial development in the eastern part of the county.
Supervisors voted 4-1. Supervisor Phil Serna, who opposes the project, voted against the water plan.
A study by the Sacramento County Water Agency found that the county's existing water sources are sufficient to serve the development.
The report says Cordova Hills will use groundwater and surface water, with an initial dependence on groundwater.
Supervisor Don Nottoli, who represents the area where the project is planned, said county officials are discussing ways to provide more surface water for Cordova Hills.
Groundwater for the project will likely come from the North Vineyard Well Field, south of Mather Field and possibly from Mather housing wells. Surface water will come from the Central Valley Project, Folsom Lake, and the Sacramento and American rivers.
Call The Bee's Brad Branan, (916) 321-1065. Follow him on Twitter @bradb_at_sacbee.