WSSC Water Lifts Recreational Water Contact Health Advisory for Triadelphia Reservoir

Laurel, Md. – October 4, 2024 – WSSC Water today lifted the recreational water contact health advisory for the Triadelphia Reservoir. The advisory was issued on September 12 due to high levels of blue-green algae. The end of the health advisory follows two consecutive weeks of extensive monitoring and testing, which shows algal concentrations and potential toxins well below advisory thresholds. Recreational users can safely resume allowable activities at the Triadelphia Reservoir. 

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

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. It is important to note that WSSC Water’s drinking water was not affected and meets all Safe Drinking Water Act standards. 

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 www.wsscwater.com/watershed.