May 12, 2017, 2pm PDT
After a wet winter, California's historic drought is over for now. But larger stores of groundwater stored in natural aquifers, steadily depleting, will be difficult to refill.
January 7, 2017, 9am PST
Seven oil companies, including Chevron, have been injecting wastewater into 10 aquifers for decades despite never receiving permission from the U.S. Environmental Protection Agency to do so. The aquifers are not currently used for drinking water.
January 24, 2016, 11am PST
In his 2015 state of the state address, Gov. Jerry Brown announced his intention to tackle the Golden State's formidable $59 billion road and bridge deficit. A year later, that staggering figure jumped 30 percent to $77 billion.
June 13, 2015, 7am PDT
Though the number of residents in the state affected by drought dropped by the millions after recent heavy rains, areas of the state that rely on underground supplies of water could still run out of water within months.
October 9, 2014, 1pm PDT
According to the Center for Biological Diversity, toxic wastewater from oil industry fracking operations has been illegally injected into Central Valley disposal sites, posing a threat to water supplies of nearby residents.
July 29, 2014, 1pm PDT
Inadequate state enforcement of protected underground aquifers led to a group of emergency cease and desist orders. The failure of regulators is "especially disturbing" in a state stricken by a historic, economy- and life-threatening drought.
November 14, 2009, 11am PST
Over forty years, the federal government exploded almost a thousand nuclear warheads under the Nevada desert. Radiation leeched into the aquifers, in a region with a growing population and a water crisis.
May 20, 2009, 10am PDT
This piece from <em>Scientific American</em> looks at the jurisdictional challenge of conserving water in the cross-state Ogallala Aquifer, one of the world's largest sources of freshwater and the backbone of the nation's farm economy.
May 16, 2009, 5am PDT
Water shortages and environmentally-based restrictions are leaving Central California's agricultural lands dry. As a result, farmers are increasingly tapping into groundwater sources. Many are calling on the state to monitor the use of its aquifers.
November 17, 2008, 7am PST
The state governments of Missouri and Arkansas are expected to sign an agreement this year to create a watershed and aquifer protection pact geared at controlling water quality from sources that cross state boundaries.
Arkansas Democrat Gazette
October 26, 2008, 7am PDT
UNESCO has released a detailed map of the world's aquifers, a move the organization hopes will enable more intelligent use of natural resources.