Harrah S_T Facility Wastewater Treatment Plant, Harrah, Washington

Harrah S_T Facility is a municipal wastewater treatment plant located in Harrah, Washington, within Yakima County. The plant serves a small population of 512 residents, reflecting its role in a rural community in the Pacific Northwest region of the United States. The plant provides secondary treatment, which is the standard level required under the U.S. Clean Water Act for municipal wastewater facilities. With a designed capacity of 302.83 megaliters and an annual discharge volume of 151.42 megaliters, the plant operates well within its capacity. As a small facility, it is subject to state-level National Pollutant Discharge Elimination System (NPDES) permits administered by the Washington State Department of Ecology. The treated effluent is discharged into the local watershed, which ultimately drains into the Yakima River basin. The Yakima River flows into the Columbia River, one of the largest rivers in North America, and eventually reaches the Pacific Ocean. The plant's operations help protect water quality in this agriculturally important region.

The plant discharges into the Yakima River basin, a critical waterway in central Washington that supports extensive irrigation for agriculture and provides habitat for salmon and steelhead. The Yakima River flows into the Columbia River, which drains to the Pacific Ocean. The region's semi-arid climate makes water quality management essential for both ecological health and human use.