herbicide fish kill – Aquarius-Systems https://aquarius-systems.com Surface Water Management Equipment Fri, 16 Jan 2026 18:46:27 +0000 en-US hourly 1 https://wordpress.org/?v=7.1 https://aquarius-systems.com/wp-content/uploads/2022/01/cropped-favicon-32x32.png herbicide fish kill – Aquarius-Systems https://aquarius-systems.com 32 32 Suburban Chicago Lake’s Fish Kill Sparked by Herbicide Treatment https://aquarius-systems.com/suburban-chicago-lakes-fish-kill-sparked-by-herbicide-treatment/ Wed, 29 Dec 2021 22:28:57 +0000 https://aquarius-systems.com/?p=3001 Suburban Chicago official says hundreds of fish died in the community’s lake when oxygen levels plummeted after an herbicide was applied to combat aquatic plants.

About 400 fish, including largemouth bass, died last week in Libertyville Illinois’s Butler Lake soon after a company applied a chemical that’s designed to control invasive weeds, including the lake’s excessive growth of water lilies.

Libertyville public works director Paul Kendzior tells The Daily Herald that the vegetation die-off caused dissolved oxygen levels to fall, depriving fish of oxygen and killing them. He says the herbicide application itself didn’t directly harm the fish.

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