GRANDVIEW STP - Grandview, Washington Wastewater Treatment Plant

GRANDVIEW STP is a municipal wastewater treatment plant located in Grandview, Yakima County, Washington. It serves a population of about 10,920 people, placing it in the small-to-medium agglomeration category. The plant is situated inland, approximately 50 kilometers from the coast. As a U.S. facility, GRANDVIEW STP operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permitting. Operational status is assumed active based on its listing. The plant discharges treated wastewater into the Yakima River basin, which flows into the Columbia River and eventually reaches the Pacific Ocean. The Yakima River supports diverse aquatic life, including salmon runs, and is an important water resource for agriculture in the region. The plant's discharge must meet water quality standards to protect downstream ecosystems.

GRANDVIEW STP discharges into the Yakima River watershed, a tributary of the Columbia River. The Columbia River flows into the Pacific Ocean, forming a major estuary. The Yakima River supports critical habitat for salmon and steelhead, and its water quality is vital for irrigation and municipal use. The plant's operations are regulated to prevent nutrient pollution and protect aquatic life in this semi-arid region.