Daphnia Problem? Here's How One Clean-Water Plant Gobbled It Up

An operations team sends a swarm of bluegills to gobble up a nuisance overpopulation of Daphnia at a Washington clean-water plant.

Daphnia Problem? Here's How One Clean-Water Plant Gobbled It Up

Operator Lonnie Cannon dumps bluegills into one of the final clarifiers at the Clarkston treatment plant.

For weeks the staff at the Clarkston Wastewater Treatment Plant battled an aggravating overpopulation of Daphnia in the secondary clarifiers.

The tiny crustaceans, often called water fleas, were reproducing in such numbers that they were clogging the screens. A team member...

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