I'm not sure exactly how much water these data-centers use, but it's huge enough that Microsoft built a water treatment plant next to its DC in Quincy, WA, whic

I'm not sure exactly how much water these data-centers use, but it's huge enough that Microsoft built a water treatment plant next to its DC in Quincy, WA, which it now leases back to the city for $10/year in exchange for reduced water rates. In that scenario the water is reused by treating at each stage between the fruit processors, the data center and the city. http://blogs.technet.com/b/msdatacenters/archive/2011/10/13/microsoft-s-data-center-takes-fresh-approach-on-water-reuse.aspx http://blogs.technet.com/b/msdatacenters/archive/2011/10/13/...