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Just how hard is it to keep wastewater out of our drinking water? Super hard. In this episode, we take a look at the lengths one great American city, Chicago, went to in order to keep the source of its drinking water clean. Reverse the flow of the river? Why not? Then we explore the origins of activated sludge — a century-old microbial goo that still cleans up our sewage today. We end with a scientist studying what a city’s wastewater can reveal about the severity of the COVID-19 pandemic.
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In the 1990s, lakes and wetlands dried up in Florida’s fast-growing Tampa Bay region. Some attributed the drastic change to drought; others to overpumping of an underground aquifer. A pitched legal battle, known as the Water Wars, played out. Some government-run utilities wanted to keep pumping fro…
Today we leave the big cities behind and ask: How does rural America manage its water infrastructure? After all, one in five U.S. households isn’t connected to a sewer system. We visit the rolling mountains of Letcher County, Kentucky. There, in the early 1900s, coal mining firms built company town…
Clean water can get contaminated on its way to your faucet. In America, more than 9 million lead service lines connect city water to individual homes (and apartments), leaving millions of people vulnerable to potentially harmful doses of lead. Retired EPA scientist — and Flint whistleblower — Migue…
Older American cities have a dirty problem — outdated sewer systems that use a single pipe to carry both sewage and stormwater to treatment facilities. As population growth and climate change have increased both sewage and stormwater, those pipes can get filled to capacity, and the untreated water …
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