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San Diego County Water Authority has filed another lawsuit over rates charged by the Metropolitan Water District, a Los Angeles-based water wholesaler.

In its complaint filed in Superior Court in Los Angeles, the water authority contends that the rate structure approved Tuesday by the MWD board for 2017 and 2018 used the same methodology as costs from 2011-14 that were previously ruled illegal by a Superior Court judge.

Before you take a gulp of water, try to mentally trace where that water that just gushed out of your taps has been: How did it go from that weird-tasting raindrop to the clear, odorless water that is sitting in your glass now?

Safe drinking water is a privilege Americans often take for granted — until a health crisis like the one in Flint, Mich., happens that makes us think about where it comes from and how we get it.

Building more geothermal power plants by the Salton Sea could eventually save Californians hundreds of millions of dollars per year, according to a new report.

The lake is home to one of the world’s most potent geothermal reservoirs, thanks to underground heat that brings salty water to temperatures greater than 500 degrees Fahrenheit. But while 11 geothermal plants already generate electricity along the Salton Sea’s southern shore, energy development has ground to a halt in recent years, due to the high cost of building geothermal facilities. Only one of those 11 plants opened after 2000.