Leaky sewers are likely responsible for large amounts of medications in streams

Pharmaceutical compounds can harm the environment. However, in waterways that don't receive treated wastewater, these pollutants aren't expected to be present. Now, researchers have found that amounts of some medications carried by a stream in Baltimore were substantial, despite generally low concentrations over the course of a year. Because wastewater plants don't impact this stream, the high loads are likely coming from leaking sewer pipes, they say.

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