"The U.S. Environmental Protection Agency has announced a $630 million plan to capture and treat sewage-tainted water that routinely flows over the border from Tijuana into San Diego Bay."

"A month after a Southern California offshore oil spill, environmental advocates said Tuesday that they plan to sue the federal government over the failure to review and update plans for platforms off the coast."

"Lax oversight has allowed oil and gas developers to dump billions of barrels of toxic wastewater into the ground, endangering the San Joaquin Valley’s dwindling groundwater supplies".

"A powerful storm barreled toward Southern California after flooding highways, toppling trees and causing mud flows in areas burned bare by recent fires across the northern part of the state."

"California Governor Gavin Newsom on Thursday unveiled a plan to ban new permitting of oil wells within 3,200 feet (975 meters) of communities, calling it a move that will both protect public health and further the state’s goals to combat climate change."

"This year’s largest blaze generated powerful storm clouds. We show you in 3-D."

"A trio of moisture-rich storm systems are aimed at the West Coast and poised to dump exceptional precipitation totals in parts of California, Oregon and Washington state. Double-digit amounts are possible in some places by the end of the month, making a dent in the region’s prolonged drought-driven water deficit."

"In a new push to stop further depletion of California's shrinking aquifers, state regulators are turning to technology once used to count Soviet missile silos during the Cold War: satellites."