Pacific City STP - Advanced Wastewater Treatment in Pacific City, Oregon

Pacific City STP is a municipal wastewater treatment facility located at 34300 Cape Kiwanda Drive in Pacific City, Tillamook County, Oregon. The plant serves a population of approximately 2,131 residents in this coastal community on the northern Oregon coast. The plant provides advanced treatment, which goes beyond secondary treatment to remove nutrients and other pollutants. With a designed capacity of 1,514.16 cubic meters per day and a discharge volume of 454.25 cubic meters per day, the facility operates well within its capacity. As a US plant, it operates under the National Pollutant Discharge Elimination System (NPDES) permit program, administered by the Oregon Department of Environmental Quality. The plant's treated effluent is discharged into the local watershed, which drains to the Pacific Ocean via the Nestucca River or nearby coastal streams. The receiving waters support salmon runs and other marine life, making advanced treatment important for protecting downstream ecosystems and recreational uses along the Oregon coast.

The plant discharges into the Nestucca River watershed, which flows into the Pacific Ocean near Pacific City. This coastal area supports critical salmon and steelhead habitats, as well as shellfish beds and marine fisheries. The advanced treatment level helps protect water quality in the sensitive coastal environment, where nutrient loading can impact nearshore ecosystems and recreational beaches.