Wastewater Department | City of Granite Falls
The Wastewater is conveyed through pipes primarily comprised of 8" with some 10" and 12" to the Wastewater Treatment Plant located at 501 West Wallace Street. The Treatment process: ... Granite Falls, located in the central point of Snohomish County, is situated between the South fork of the Stillaguamish River and the Pilchuck River, at ...