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www.nationalgeographic.org/media/earths-fresh-water

Over 68 percent of the fresh water on Earth is found in icecaps and glaciers, and just over 30 percent is found in ground water. Only about 0.3 percent of our fresh water is found in the surface water of lakes, rivers, and swamps. Of all the water on Earth, more than 99 percent of Earth's water is unusable by humans and many other living things!

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

The Earth stripped of its water (left). All of the Earth's ocean water (middle) and freshwater (right). Credit: David Gallo/WHOI. If Earth was the size of a basketball, all of its water would fit ...

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.

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

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.

www.worldatlas.com/articles/what-percentage-of-the-earth-s...

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 ...

water.usgs.gov/edu/earthwherewater.html

Distribution of Earth's Water. In the first bar, notice how only 2.5% of Earth's water is freshwater - the amount needed for life to survive. The middle bar shows the breakdown of freshwater. Almost all of it is locked up in ice and in the ground. Only a little more than 1.2% of all freshwater is surface water, which serves most of life's needs.

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.

www.nationalgeographic.com/environment/freshwater/...

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 ...

worldwaterreserve.com/water-crisis/percentage-of-drinkable...

Groundwater is the water beneath the earth’s surface that is at 100% saturation. Anything less that 100% is considered soil mixture. 98% of the earth’s fresh water is indeed groundwater and it is about 60 times more plentiful than the surface water. Groundwater travels through holes and cracks in the bedrock.

www.answers.com/Q/How_much_of_Earth's_water_is_fresh_water

About 3 percent (2.75%) of the total water on Earth is fresh water, and as much as 75% of that is locked up as ice in glaciers and polar caps. Most of the rest is ground water.