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How drugs we take end up in the water supply




Drugs we take pass through us and into our water supply.
Drugs we take pass through us and into our water supply.
Photo by Deanslife via Flickr Creative Commons

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High-profile chemical spills and algae blooms have raised concerns about the safety of drinking water in the U.S.

But there's another kind of pollutant in water that we can't even see: The medicines we take pass through our bodies.

But they eventually end up in the water supply.

In a report for the BBC, chemist Andrea Sella of University College London takes a look at how drugs are ending up in our environment.