Groundwater, known as water held underground beneath the Earth’s surface in the soil or in pores and crevices in rock, is a beneficial resource nationally and within California as it is used for drinking water by more than 50 percent of the people in the United States, including almost everyone who lives in rural areas. For California, about 38 percent of groundwater make up the state’s total water supply, with the largest use for groundwater is for crop irrigation.

Roseville's water supply is primarily surface water from Folsom Lake.  However, we have a growing groundwater program that acts as supplemental supplies and used when needed.

Groundwater management efforts
Roseville is part of the West Placer Groundwater Sustainability Agency, a multi-agency group aimed to implement the Sustainability Groundwater Management Act. 

Placer County, the cities of Roseville and LincolnPlacer County Water Agency,  Nevada Irrigation District and in participation with the California American Water Company, will manage portions of the North American groundwater basin and implement activities that preserve and enhance the current state of the resource for our towns, communities, agriculture and the environment.

For more information, visit the West Placer Groundwater Sustainability Agency website.


Western Placer Sustainable Yield Reports

groundwater pump
Our groundwater wells use Aquifer Storage Recovery technology that allows us to treat surface water, place the water below ground into the aquifer, and then recover it from the ground when needed.

What is Aquifer Storage and Recovery and how is it used it Roseville?