CE#634: You Are Drinking What? (WSJ)


Almost 60% of the continental U.S. is now living through drought conditions, and half of all counties have been declared disaster areas. From coast to coast, cities and towns are placing restrictions on water consumption. With the nation so hot and dry and no end in sight, some are calling for a drastic solution: drinking our own wastewater—that is, what we usually flush down our toilets.

Not directly, of course. But drinking recycled wastewater is a relatively cheap and effective means of obtaining a lot of water. If all the wastewater dumped into waterways or the ocean were recycled instead, the U.S. would increase its water supply by as much as 27%, according to a report released earlier this year by the National Academy of Sciences. Nationally, that amounts to 12 billion gallons.

[image] Alex Nabaum

The process for recycling wastewater is more rigorous than for “regular” tap water, with stronger filtration. As the NAS report noted, “With recent advances in technology and treatment design, potable reuse can reduce the concentration of chemical and microbial contaminants to levels comparable to or lower than those present in many drinking water supplies.”

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