Overview
The Sultan Sewer System serves the town of Sultan, Washington, treating wastewater from approximately 4,655 residents. The plant discharges into the Skykomish River, a tributary of the Snohomish River, which flows into Puget Sound.
The Sultan Sewer System is a municipal wastewater treatment facility located in Sultan, Washington, along the Stevens Pass Highway. It serves a population of about 4,655 people, making it a small to medium-sized plant in the Snohomish County region. The plant is situated in the foothills of the Cascade Range, an area characterized by forested terrain and significant seasonal precipitation. As a facility in the United States, the Sultan Sewer System operates under the Clean Water Act, administered by the Washington State Department of Ecology. The plant's designed capacity is 1.00 million gallons per day, indicating it is sized for the current population. Plants of this scale typically employ secondary treatment to meet state and federal standards for organic and solids removal. The treated effluent from the Sultan Sewer System is discharged into the Skykomish River, a major tributary of the Snohomish River. The Snohomish River flows into Puget Sound, an ecologically significant estuary that supports salmon runs, orcas, and diverse marine life. The plant plays a key role in protecting water quality in this sensitive watershed.
Environmental context
The Sultan Sewer System discharges into the Skykomish River, which flows into the Snohomish River and ultimately reaches Puget Sound. This watershed supports critical salmon habitat, including Chinook, coho, and steelhead runs. The region's high rainfall and steep terrain make proper wastewater treatment essential to prevent nutrient loading and sediment impacts on downstream aquatic ecosystems.
Frequently asked questions
The Sultan Sewer System is located along Stevens Pass Highway in Sultan, Snohomish County, Washington, United States.
The plant serves approximately 4,655 residents in the town of Sultan and surrounding areas.
The treated effluent is discharged into the Skykomish River, which flows into the Snohomish River and eventually reaches Puget Sound.
As a U.S. facility, it operates under the Clean Water Act, with permits issued by the Washington State Department of Ecology. Plants of this scale typically require secondary treatment.
The plant has a designed capacity of 1.00 million gallons per day, which is appropriate for its service population of about 4,655.
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