- Oct 15, 2017
- Reaction score
- mid-Michigan, USoA
there are already a lot of projects where the water has been treated and then it is pumped through a wetland, to a reservoir or pumped back underground and then it is brought back after some distance and treated again and used as tap water. most people do not object to this because it has been "greenwashed". but if you talk of taking toilet to tap directly people freak out. in the arid SW toilet to tap is already happening.Until you get pictures, you can think of beer.
Brewing beer uses a lot of water: from the irrigation needed to grow barley and hops to the aqua that ends up in the bottle. American brewers use an average of seven gallons of water to make one gallon of beer. This has pushed craft breweries to think about how they can reduce their water...modernfarmer.com
the water is clean, probably a lot cleaner than what comes out of many waste treatment plants and is then used by many people downstream, but of course that also goes through another round of treatment.
i've not been able to find how many times the flow of the Mississippi River is reused before it reaches the Gulf of Mexico... hmm... must be a significant amount though it would be interesting to see it expressed as a percentage or multiple.