Everything from disposed of drugs to hormones and disease-causing bacteria — anything that is rinsed or flushed down the drain — can contaminate wastewater. A group of researchers from the University of Waterloo in Canada was the first to measure the effects of waste-contaminated water on the metabolism of fish. They found that fish from water contaminated with wastewater effluent breathe faster and require more energy than other fish — energy they could use elsewhere. And they found the bacteria on dead and decaying fish tells a tale of what they’ve been exposed to.

The research study, led… more

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