By Lauren Sommer, for KQED Science
August 3, 2017
"California survived its historic drought, in large part by using groundwater. It was a lifeline in the Central Valley, where it was the only source of water for many farmers.
California regulators are charged with protecting that groundwater, but for years they failed to do so. Through a series of mistakes and miscommunication, they allowed oil companies to put wastewater into drinking water aquifers that were supposed to be safeguarded.
Now, a KQED investigation reveals that regulators still know little about the actual impact on the state’s groundwater reserves."