Overview
West Point WWTP in Seattle, Washington, serves over 1.3 million people. It is a major coastal treatment plant discharging into Puget Sound, operating under the US Clean Water Act.
West Point WWTP is a large municipal wastewater treatment plant located in Seattle, Washington, within King County. It serves a population of approximately 1.38 million, making it one of the largest treatment facilities in the Pacific Northwest. The plant is situated on the shores of Puget Sound in Discovery Park, a prominent coastal location. As a major facility in the United States, West Point WWTP operates under the regulatory framework of the Clean Water Act, administered by the Washington State Department of Ecology through an NPDES permit. For a plant of this scale serving over 1.3 million people, advanced treatment is typically required to protect sensitive marine waters. The plant's designed capacity is 1.00 (likely in million gallons per day or similar units), indicating substantial infrastructure. The plant discharges treated effluent into Puget Sound, a large estuarine system connected to the Pacific Ocean via the Strait of Juan de Fuca. Puget Sound supports diverse marine life, including salmon, orcas, and shellfish. The plant's coastal location and large population served necessitate rigorous treatment to minimize environmental impact on this ecologically sensitive water body.
Environmental context
West Point WWTP discharges into Puget Sound, a major estuary in the Salish Sea that connects to the Pacific Ocean through the Strait of Juan de Fuca. Puget Sound is an ecologically rich environment supporting salmon runs, marine mammals, and shellfish beds. The plant's coastal location and large service area mean its effluent quality is critical to protecting the sound's water quality and aquatic life.
Frequently asked questions
West Point WWTP is located in Seattle, Washington, within King County, on the shores of Puget Sound in Discovery Park.
The plant serves approximately 1.38 million people, making it one of the largest wastewater treatment plants in the Pacific Northwest.
The plant discharges treated effluent into Puget Sound, a major estuary connected to the Pacific Ocean. The discharge is regulated under an NPDES permit to protect marine water quality.
West Point WWTP operates under the US Clean Water Act, with permits issued by the Washington State Department of Ecology. Large plants like this require advanced treatment to meet stringent water quality standards.
Plants serving over 1 million people typically employ advanced secondary or tertiary treatment to remove nutrients and pathogens, especially when discharging to sensitive coastal waters like Puget Sound.
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