This is going to be a short post today because this very cool story about using treated wastewater for beer has been popping up. I think you should read it and I think you should be interested in it.
Brewing, as an activity, produces close to five times the wastewater per product. Or: nearly 5 gallons of water to produce 1 gallon of beer (roughly). We need ways to reuse this water for human consumption and beer is a hell of a good way to convince people that this is not only potable and sustainable, but a damn good idea.