Port Orchard WWTP - Parkwood, Washington Wastewater Treatment Plant

Port Orchard WWTP is a municipal wastewater treatment facility located in Parkwood, Washington, within Kitsap County. It serves a population of approximately 11,440 residents, classifying it as a medium-sized agglomeration under US regulatory standards. The plant is situated near the Puget Sound, a major estuary on the Pacific coast. As a US facility, Port Orchard WWTP operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permits issued by the Washington State Department of Ecology. Plants of this scale typically employ secondary treatment to meet federal and state water quality standards. The designed capacity is reported as 1.00 million gallons per day, indicating a moderate treatment capacity. The plant's treated effluent is discharged into the Puget Sound watershed, which ultimately drains into the Pacific Ocean. The Puget Sound is a vital ecological resource, supporting diverse marine life including salmon, orcas, and shellfish. The plant's operations are critical for protecting water quality in this sensitive estuarine environment, particularly given the region's growing population and industrial activity.

Port Orchard WWTP discharges into the Puget Sound, a large estuarine system connected to the Pacific Ocean via the Strait of Juan de Fuca. The Puget Sound watershed supports a rich ecosystem, including critical habitats for salmon, herring, and marine mammals. The plant's location within 50 km of the coast means its effluent can influence nearshore water quality, making nutrient and pollutant control essential for maintaining the health of this ecologically sensitive area.