Arizona groundwater is a lifeline that sustains cities, tribal communities, farms, and plants and animals. Learn the basics.

As the seven Colorado River Basin states haggle over the future of water allocations, authors of a new report on groundwater argue that equal attention should be paid to the water beneath our feet ...

California saw a bump in groundwater supplies last year, new data shows. While the increase is modest, it comes amid a decades-long slide in reserves.

Arizona's Ag to Urban law comes with a big question mark: Where will the water to replenish the aquifer come from?

Water levels at Lebanon's largest reservoir on the Litani River have fallen to historic lows amid what experts describe as ...

Forever chemicals are a threat to public health. They can sicken people who regularly eat fish tainted by the chemicals or drink water with forever chemical pollution. A new study found one SC river ...

The Waterkeeper Alliance has identified a river in the country with the highest levels of per- and polyfluoroalkyl substances ...