700 Trillion Gallons Of Water Found Deep Below California's Central Valley
But, water experts say the problem with all that water may be getting to it.
"A lot of this new groundwater that researchers have found is pretty deep, and some of it's salty, and it may be pretty hard to get to," water expert, and President of the Pacific Institute Peter Gleick told KCBS.
Desalination of the resource would likely be cheaper than cleaning up ocean water, but aside from being deep down, the water is also far from urban areas.
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The search for other resources below the surface could make the water unusable, according to Gleick.
"Some of these groundwater resources may be at risk from oil and gas operations, from reinjection of the wastewater," Gleick said.
Farmers for the most part won't have the funds to pump that water up to the surface.
"The real question that this study doesn't answer is how much ultimately might actually be usable," Gleick said.