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Vermont finishes lamprey treatment, lifts water advisory

Posted November 25

— Vermont fish and wildlife officials have completed the second of two treatments aimed killing sea lamprey in two Lake Champlain tributaries.

Eel-like lamprey attach themselves to fish, and many believe their presence in the lake has hurt populations of lake trout and other species. For years, a chemical known as TFM has been used to kill immature lamprey in rivers in Vermont and New York where they breed.

One of the treated tributaries, the LaPlatte River, flows into Shelburne Bay near where the 70,000-customer Champlain Water District has its intake. Officials used powdered activated carbon at the district's water treatment facility to remove any TFM from the water supply, but monitoring showed the chemical didn't come within two miles of the intake.

As of Friday, officials lifted a water-use advisory.

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