Peak water is coming. In some places, peak water is here.

We’re never going to run out of water — water is a renewable natural resource (mostly). But increasingly, around the world, in the U.S., and locally, we are running up against peak water limits. The concept is so important and relevant that The New York Times chose the term “peak water” as one of its 33 “Words of the Year” for 2010 (along with “refudiate,” “top kill,” and “vuvuzela”), a term that a colleague and I defined in a new research paper in May in the Proceedings of the National Academy of Sciences (available here).

Water Number: Three (3) definitions of “peak water.”