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Is It Safe to Drink the Water? Turning on the Tap, with Dave Keiser and Joseph Shapiro

Oct 6, 2026 · 35m

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On this episode

About this episode

In this episode, host Margaret Walls speaks to Dave Keiser and Joseph Shapiro about safe drinking water in the United States. Keiser is a professor at the Yale School of the Environment, and Shapiro is an associate professor at the University of California, Berkeley. Together with other coauthors, they put out a research paper on clean drinking water: how US residents have access to it, what types of policies help preserve it, and the degree to which it benefits people’s health. Their paper incorporates more than 250 million readings on 1,250 different water pollutants across 48 states over several decades, links those data to maps of public water systems across the country, and connects…