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The Conversation
The Conversation
Environment
Gregory Pierce, Co-Director, Luskin Center for Innovation, University of California, Los Angeles

Desalinating seawater sounds easy, but there are cheaper and more sustainable ways to meet people's water needs

United States Ocean California Drought
The Carlsbad Desalination Plant in Southern California is the largest such plant in the Western Hemisphere, providing 50 million gallons of desalinated seawater per day.​ Reed Kaestner via Getty Images

Coastal urban centers around the world are urgently looking for new, sustainable water sources as their local supplies become less reliable. In the U.S., the issue is especially pressing in California, which is coping with a record-setting, multidecadal drought.

California Gov. Gavin Newsom recently released a US$8 billion plan for coping with a shrinking water supply. Along with water conservation, storage and recycling, it includes desalination of more seawater.

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