Wastewater

Sewer Emergencies

In case of a sewer emergency, during the hours of 8 a.m. and 5 p.m, please call 360-793-2231. After 5 p.m, please call 425-508-8987 or 911.

City of Sultan Wastewater Treatment Plant

The City of Sultan’s wastewater collection and treatment process involves a multifaceted system made up of a Wastewater Treatment Plant (WWTP), a wastewater lift station, and approximately 16 miles of gravity and force main piping. The City of Sultan’s sewer system is a major infrastructure, most of which is invisible to the customers it serves. The sewer system requires qualified staff to operate and maintain an ongoing capital improvement program to replace old components to meet the requirements mandated by federal and state laws. Current rates can be found under Ordinance 1293-18.

The vast majority of the sewage within the City of Sultan is generated on the east side of the Sultan River. The sewage is conveyed in pipes to a single sewage pump station. The sewage is then pumped across the Sultan River through an 8-inch force main that hangs beneath the U.S. 2 bridge over the Sultan River to a receiving manhole on the west side of the river. It is then processed at the WWTP and the treated water, also called effluent, is released into the Skykomish River.