Residents Urged to Avoid Contact with Lake Audubon and Lake Thoreau

A harmful algae bloom spotted on Lake Audubon a little over a week ago remains on the lake. The bloom, called Microcystis, was can produce toxins that are lethal for livestock, fish, and people. Some toxins have been linked to liver cancer.

The Environmental Protection Agency says Microcystis is a common form of algae that is “almost always toxic.” It resembles a green, thick, paint-like material and tends to gather along shores.

As the algae bloom continues, Reston Association is advising all residents to avoid contact with the water. Pets should not swim in or drink from the water.

In a statement, RA said consultants have indicated a drop in the temperature of the water will help get rid of the bloom.

Also, purple and green clumps floating on the surface of Lake Thoreau were identified as Plankothrix algae, which can also produce toxins. Residents should also avoid contact with that water.

Thus far, no toxicity tests have been conducted by RA.

Photo by Reston Association

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