The first version of this infographic came from RainCatcher's Facebook page (the infographic is a little better quality there). The version shown here - the original - is from GOOD and Column Five Media. You can click on it to enlarge it, or view a larger version here.
Thanks to reader Ihadira Lopez for identifying the original source.
It's useful (although the print is a bit small), but it blows off groundwater by stating 'most of which is too expensive to tap into and filter'. Of course, that assumption makes the available water a small percentage, but remember - even that 1% of all freshwater equals about 335,000 cubic kilometers. Even if we take a conservative approach and halve that number, it's still a lot of water.
Right - those numbers mean little to most people. But they equal abut 15 or 7.5 times the total volume of the North American Great Lakes, and remember - that water is mostly renewable although we have to worry about its quality degradation as we use it.
And we can still pump some of that groundwater.
"The mind is like an iceberg, it floats with one-seventh of its bulk above water." - Sigmund Freud