A quick Internet search for "global assessment of human freshwater consumption" yielded 20,600,000 results... How many more do you need? The first three links are
- The chapter dedicated to fresh water use in the Millennium Assessment Report (http://www.unep.org/maweb/documents/document.276.aspx.pdf)
- A Ph.D. thesis presented at ETH-Zurich in 2011 on that topic (http://www.ifu.ethz.ch/staff/stpfiste/ads87weiurhhewgfc8eiqewg.pdf)
- A review of freshwater use published in the International Journal of Life Cycle Assessments (Springer) in 2013 (http://link.springer.com/article/10.1007%2Fs11367-012-0519-3#page-1)
Hi. Thanks Michel. Really useful. The thing is that most of this reports on global water consumption refer to Shiklomanov 1997 or 2003, so i was wandering if their were other assessements. I will check the references you suggest. Thanks.
wada and colleagues published a set of interesting global water use assessments, see http://www.earth-syst-dynam.net/5/15/2014/esd-5-15-2014.html and references therein.