Video: Why flush toilets are wasteful

toilet flushes
Credit: Pixabay/CC0 Public Domain

Every time a toilet flushes, a gallon and a half of clean, treated water is wasted.

"We use drinking to flush our ," said Lena Trotochaud, a research scientist with the Duke University Center for Water, Sanitation, Hygiene and Infectious Disease (WaSH-AID). "And as continues to change and water becomes more scarce, and we have more droughts and more fires, we're going to be using more and more drinking water and having less and less of it. We really need to conserve that precious resource."

WaSH-AID is engineering a new kind of toilet—one that treats human excreta onsite, with ultrafiltration processes that leave the liquid fraction of the waste clean enough to use for flushing. The "Reclaimer" toilet is currently being tested at a textile mill in India, but Trotochaud said it could also be used in drought-stricken areas of the U.S. that are experiencing rapid population growth, in the future.

The toilet was the subject of a recent short video produced by Sci NC, a PBS North Carolina program, which can be viewed below.


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Provided by Duke University
Citation: Video: Why flush toilets are wasteful (2022, March 24) retrieved 1 October 2022 from https://phys.org/news/2022-03-video-flush-toilets.html
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