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www.usgs.gov/special-topic/water-science-school/science/how-much-water-there-earth

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. In fact, some of the water you see flowing in rivers comes from seepage of groundwater into river beds.

www.worldatlas.com/articles/what-percentage-of-the-earth-s-water-is-drinkable.html

How Much Freshwater is There on Earth? As stated above, about 2.5% of the Earth’s water is freshwater. Of the fresh water available on earth, only 31% is accessible for use. About 69% of the fresh water is in form of ice cap and glacier in places like the Antarctic and Greenland ice sheet, further reducing the quantity of the available ...

www.livescience.com/29673-how-much-water-on-earth.html

If Earth was the size of a basketball, all of its water would fit into a ping pong ball. How much water is that? It's roughly 326 million cubic miles (1.332 billion cubic kilometers), according to ...

science.howstuffworks.com/environmental/earth/geophysics/question157.htm

How much water is there on Earth? 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.This water is in a constant cycle-- it evaporates from the ocean, travels through the air, rains down on the land and then flows back to the ocean.

en.wikipedia.org/wiki/Fresh_water

Much of the earth's fresh water (on the surface and groundwater) is unsuitable for drinking without some treatment. Fresh water can easily become polluted by human activities or due to naturally occurring processes, such as erosion. Water is critical to the survival of all living organisms.

spaceplace.nasa.gov/water

Just 3.5 percent of the water on Earth is fresh water we can drink. And most of that fresh water, 68 percent, is trapped in ice and glaciers. A third of the fresh water is in the ground. We call it groundwater. The last two percent of fresh water is in the rivers, lakes, and streams.

medium.com/@RAF100STEAM/how-much-fresh-water-is-left-on-earth-d356ebaeca2e

So, how much fresh water is actually left on planet Earth? With Earth being made up of 70% water, you would think that there would be an endless amount for us to drink. However, this is not the case.

www.usgs.gov/special-topic/water-science-school/science/where-earths-water

You may know that the water cycle describes the movement of Earth's water, so realize that the chart and table below represent the presence of Earth's water at a single point in time. If you check back in a million years, no doubt these numbers will be different! Left bar: All water, freshwater and saline, on, in, and above the Earth.

en.wikipedia.org/wiki/Water_distribution_on_Earth

The total volume of water on Earth is estimated at 1.386 billion km³ (333 million cubic miles), with 97.5% being salt water and 2.5% being fresh water. Of the fresh water, only 0.3% is in liquid form on the surface. In addition, the lower mantle of inner earth may hold as much as 5 times more water than all surface water combined (all oceans ...

www.nationalgeographic.com/environment/freshwater/freshwater-crisis

Freshwater makes up a very small fraction of all water on the planet. While nearly 70 percent of the world is covered by water, only 2.5 percent of it is fresh. The rest is saline and ocean-based ...