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Municipal wastewater having funny effect on fish

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Biologist Bruce Mathieson in his lab at UBC-Okanagan. (Contributed by: Bruce Mathieson)
There's some troubling news for fish populations.

A new study at UBC-Okanagan shows significant changes to male fish living in municipal effluent -- water that's already been treated, cleaned and purified.

Purification systems don't remove things like estrogen from the water, and that's having a funny effect on the fish.

Bruce Mathieson, an associate professor of biology at UBC Okanagan, has been comparing fish found in the City of Vernon's muncipal wastewater and those in a nearby pond. He's found the wastewater appears to be feminizing the fish, and making them larger.

He explains what they've observed to Daybreak host, Chris Walker.

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