How much groundwater is there on earth?

Sphere representing all of Earth's waterWater sourceWater volume, in cubic milesWater volume, in cubic kilometersOceans, Seas, & Bays321,000,0001,338,000,000Ice caps, Glaciers, & Permanent Snow5,773,00024,060,000Groundwater5,614,00023,400,000Fresh2,526,00010,530,00011 more rows read more

The answer is that there is more to our water supply than just surface water, there is also plenty of water beneath our feet. Even though you may only notice water on the Earth's surface, there is much more freshwater stored in the ground than there is in liquid form on the surface. read more

Areas where the depth is greater indicate greater groundwater availability. Nature Geoscience . As it turns out, there are about 22.6 million cubic kilometers—or roughly 6 quintillion (6,000,000,000,000,000,000) gallons—of groundwater spread out across the globe. But the vast majority of it is too far underground to be useful to humans. read more

There's a whole lot of water on Earth! Something like 326,000,000,000,000,000,000 gallons (326 million trillion gallons) of the stuff (roughly 1,260,000,000,000,000,000,000 liters) can be found on our planet. read more