The most important trend in the use of water is the slowly unfolding story of peak water in the United States and elsewhere. Data on US water use are compiled every five years by the US Geological Survey, covering every state and every sector of the economy. The latest data — for 2010 — have just been released, and they show the continuation and acceleration of a stunning trend: US water withdrawals, for all purposes, are declining, not growing.
Traditional water planning and management assume inevitable, continuing, lockstep growth in demand for water as populations and economies expand. This has led to calls for continued expansion in traditional water infrastructure: dams, aqueducts, groundwater extraction, and long-distance water transfers.