A damaged pipe carrying treated, disinfected Class A reclaimed water from the to the York Pump Station in Redmond overflowed into the Sammamish River on Wednesday afternoon according Annie Kolb-Nelson, spokesperson for the King County Wastewater Treatment Department.
A community member called King County’s Wastewater Treatment Division around 3:45 p.m. to report an overflow near , according to Kolb-Nelson. A crew was dispatched and had the pipe shut down in about half an hour, she added. Class A reclaimed water is approved for irrigation and is safe for human contact. The overflow contained no raw sewage.
The pipe carries reclaimed water from the Brightwater plant through the Woodinville Pump Station, 12900 Woodinville-Duvall Road to the York Pump Station at 14120 NE 124th in Redmond. The age of the damage pipe is unknown at this time; Kolb-Nelson said it was converted from a raw sewage pipe to a reclaimed wastewater pipe during Brightwater’s construction. The reason for the pipe’s failure is under investigation.