Emory University’s WaterHub diverts wastewater from the sewage system and cleans it as it flows through “ecochambers.” Hydroponically grown flora host thousands of types of microbes on their roots—microbes that feed on contaminants. The reclaimed water is used in the university’s steam and chiller plants as well as to flush toilets, saving as much as 146 million gallons a year.
This article originally appeared in our September 2015 issue.
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