For Earth we're not - the majority of the planet is water. But only 3% is fresh water.
The World Bank describes the conflicts of the 21st century as "water wars" around the desert regions of the Middle East and Central Asia.
Rising tides and floods render more water sources undrinkable each year.
Described as a "food bubble" economy the future will increasingly see measures to retain more of the blue stuff.
All the more astonishing that East Kent has the most polluted water supply in SouthEast England including ongoing pollution of the UNESCO and SSSI site at Pegwell Bay.