Drinking water in the United States is, according to the EPA, among the world's "most reliable and safest supplies." Its delivery involves a complex infrastructure of pipes, treatment facilities, aqueducts, dams, and reservoirs, and it operates on a local, state, and federal level. How did we get here? How is the U.S. public water system legislated? And, how is "potable" actually pronounced?

We spoke with James Salzman, author of Drinking Water: A History. He is also a professor of environmental law at the UCLA School of Law and the Bren School of Environmental Science at UC Santa Barbara.

This episode is part of our occasional series on American infrastructure. Listen to our first installment on roads.

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