Total Water on Earth = 1,400,000,000 km3

Earth's Total Water Supply Earth's Total Freshwater Supply
97.2% Oceans (saltwater)
  2.8% Freshwater
100.0% Total Water on Earth
2.380% Icecaps, glaciers
0.397% Ground water
0.022% Surface water
0.001% Air and soil
2.800% Total Freshwater on Earth

source: USGS Water Resources Outreach Program http://water.usgs.gov/outreach/OutReach.html 30jul01

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