WSSC Water Lifts Recreational Water Contact Health Advisory for Triadelphia Reservoir

Watershed Users Can Safely Resume Activities

| News Release



Laurel, Md. – October 5, 2020 – WSSC Water today lifted the recreational water contact health advisory for Triadelphia Reservoir, which was issued on September 17 due to high levels of blue-green algae. The release follows two weeks of extensive monitoring and testing showing algal concentrations and potential toxins well below advisory thresholds. Recreational users can safely resume allowable activities while practicing physical distancing for added safety.

For up-to-date information on watershed activities, please call our hotline at (301) 206-4386 (4FUN). Permitting and regulation details can be found at

The Triadelphia Reservoir, located along the Patuxent River in Montgomery and Howard counties, serves as a drinking water source for WSSC Water and as a recreational area for hiking, fishing and boating. It is important to note that WSSC Water’s drinking water was not affected and continues to meet all Safe Drinking Water Act standards.

To learn about blue-green algae and algal blooms, visit WSSC Water’s Algal Blooms page.

WSSC Water is the proud provider of safe, seamless and satisfying water services, making the essential possible every day for our neighbors in Montgomery and Prince George’s counties. We work to deliver our best because it’s what our customers expect and deserve.

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