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Residents Advised To Avoid Contact With Triadelphia Reservoir Water

Harmful algal blooms have been detected in the Triadelphia Reservoir. People and pets should avoid contact with the water, the WSSC said.

HOWARD COUNTY, MD — WSSC Water has issued a recreational water contact health advisory for Triadelphia Reservoir due to high concentrations of blue-green algae, known as harmful algal blooms. This advisory will remain in effect for at least one month.

Harmful algal blooms can produce extremely dangerous toxins that can sicken or kill people and animals, according to the U.S. Environmental Protection Agency.

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The Triadelphia Reservoir, located along the Patuxent River in Montgomery and Howard counties, serves as a drinking water source for WSSC Water and a recreational area for hiking, fishing and boating.

WSSC Water's drinking water is not affected and continues to meet all Safe Drinking Water Act standards, WSSC said.

As a precaution, WSSC Water will continue to closely monitor water quality conditions at its Patuxent Water Filtration Plant.

The WSSC reminded residents of the following:

The water contact health advisory issued July 21 for the T. Howard Duckett Reservoir remains in effect, WSSC Water said. There also are high concentrations of blue-green algae there, as well. This advisory will be in place for at least one month.

If you, your pet or someone you know has come in contact with or ingested water at the reservoir, call the appropriate county office from the following list:

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