People are asked to stay out of Allegheny County waterways for the next 48 hours after a power outage caused a sewage overflow.
The Allegheny County Sanitary Authority issued a statement Friday night saying the wastewater treatment plant on Preble Avenue in Marshall-Shadeland experienced a full power loss between 6 p.m. and 8 p.m.
During those two hours, the plant was unable to process wastewater, which caused its wet well to fill up and overflow…