Debris flows overwhelmed the Hyperion sewage treatment plant in Playa del Rey on Sunday afternoon, forcing officials to use an emergency measure to discharge 17 million gallons of sewage through a pipe one mile offshore. Dafeta said he believes that the incident was the largest amount of untreated sewage discharged through the one-mile pipe over the last 10 years. Water flows were directed back through the normal treatment process Monday morning, and officials are investigating the cause of the debris and repairing damaged equipment. “The flow wasn’t subsiding enough to get it through the treatment process,” Romero said. At 4:30 a.m., workers successfully used a recently installed channel to route the flows of water back through the standard treatment process, said Romero.

Source: Los Angeles Times July 12, 2021 22:56 UTC