Stanwood S_T Facility Wastewater Treatment Plant, Stanwood, Washington

The Stanwood S_T Facility is a municipal wastewater treatment plant located in Stanwood, Washington, serving a population of about 5,445 residents. Situated in Snohomish County, the plant is part of the region's infrastructure for managing domestic wastewater in a coastal area near Puget Sound. As a U.S. facility, the plant operates under the National Pollutant Discharge Elimination System (NPDES) permit program, which sets discharge limits to protect water quality. The designed capacity of 1.00 million gallons per day indicates a small-to-medium scale plant. Typical treatment for plants of this size in Washington includes secondary treatment, often with disinfection, to meet state and federal standards. The plant's treated effluent likely discharges into a local waterway that drains into Puget Sound, a major estuarine system of the Pacific Northwest. The receiving waters support diverse aquatic life, including salmon runs and marine species, making proper treatment essential for ecosystem health.

The plant is located within 50 km of the coast, and its treated effluent likely flows into a tributary of Puget Sound, a large estuarine system connected to the Pacific Ocean. Puget Sound supports critical habitats for salmon, orcas, and shellfish, and is sensitive to nutrient loading and contaminants. The plant's discharge must comply with water quality standards to protect these downstream ecosystems.