Saving Water A Flush At A Time : Short Wave Flushing toilets can consume a lot of water. So Tak-Sing Wong, a biomedical engineer at Penn State University, is trying to minimize how much is needed. Wong developed a slippery coating for the inside of a toilet bowl. In this encore episode, he tells us it can potentially move human waste more efficiently, leaving a cleaner bowl with less water.

Follow host Maddie Sofia on Twitter @maddie_sofia. Email the show at shortwave@npr.org.
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Saving Water A Flush At A Time

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Saving Water A Flush At A Time

Saving Water A Flush At A Time

Saving Water A Flush At A Time

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More than 140 billion liters of fresh water are estimated to be flushed down the toilet every day. Paolo Cordoni / EyeEm/Getty Images hide caption

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Paolo Cordoni / EyeEm/Getty Images

More than 140 billion liters of fresh water are estimated to be flushed down the toilet every day.

Paolo Cordoni / EyeEm/Getty Images

Flushing toilets can consume a lot of water. So Tak-Sing Wong, a biomedical engineer at Penn State University, is trying to minimize how much is needed. Wong developed a slippery coating for the inside of a toilet bowl. In this encore episode, he tells us it can potentially move human waste more efficiently, leaving a cleaner bowl with less water.

Follow host Maddie Sofia on Twitter @maddie_sofia. Email the show at shortwave@npr.org.

Related Link:
Viscoelastic solid-repellent coatings for extreme water saving and global sanitation in Nature Sustainability (behind paywall)

Jing Wang, Lin Wang, Nan Sun, Ross Tierney, Hui Li, Margo Corsetti, Leon Williams, Pak Kin Wong & Tak-Sing Wong

This episode was produced by Brit Hanson and edited by Viet Le.