Home

What is
Groundwater?

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.

Managing groundwater resources is critical. That’s why the state of California passed the Sustainable Groundwater Management Act, which require the adoption of groundwater management plans to sustain groundwater resources, and assist with maintaining reliable and resilient water supplies throughout California.

DWR Groundwater image

Join Our Mailing List

To sign up for updates, unsubscribe or access your subscriber preferences, please enter your contact information below.