Cleanup underway after dozens of fish killed at Orlando lake

ORLANDO, Fla. — Crews are working to clean up dozens of dead fish at an Orlando lake after a city contractor treated the water.

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City leaders said the city’s streets and stormwater division contracted Environmental Research & Design to conduct tests and implement a plan to reduce nutrients in the water column by treating Lake Giles with aluminum sulfate.

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The treatment was supposed to improve water quality.

The contractor applied the aluminum sulfate to the lake on Monday, which resulted in a fish kill, leaders said.

The city said it is working with the contractor to identify possible causes and to ensure it doesn’t happen again.

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City staff said they are helping clean up the dead fish.

Leaders said that all treatment operations have been halted until further notice.

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Katlyn Brieskorn, WFTV.com

Katlyn Brieskorn is a Digital Assignment Editor at WFTV. She joined Channel 9 in July 2019.