DEER PARK POTW - Secondary Wastewater Treatment in Spokane County, Washington

DEER PARK POTW is a publicly owned treatment works located in Spokane County, Washington, United States. The plant serves a small community of approximately 3,675 residents, providing secondary treatment to municipal wastewater. As a facility in the Pacific Northwest, it operates under the regulatory framework of the U.S. Clean Water Act, which requires secondary treatment for municipal wastewater discharges to surface waters. The plant's treatment process is secondary, which typically involves biological treatment to remove organic matter and suspended solids. With a designed capacity of 2,634.64 units and an actual discharge volume of 972.85 units, the facility operates well below its capacity, indicating room for future growth or seasonal variations. The plant's permit, likely issued by the Washington State Department of Ecology under the National Pollutant Discharge Elimination System (NPDES), governs its discharge limits and monitoring requirements. The treated effluent from DEER PARK POTW is discharged into a local water body, ultimately contributing to the Spokane River watershed. The Spokane River flows westward through eastern Washington, eventually joining the Columbia River, which drains into the Pacific Ocean. The plant's discharge supports the ecological health of the receiving waters by reducing pollutant loads, protecting aquatic life and downstream water quality in this semi-arid region.

DEER PARK POTW discharges into a tributary of the Spokane River, which flows into the Columbia River and then to the Pacific Ocean. The Spokane River watershed supports diverse aquatic life, including salmon and trout species, and is an important resource for recreation and irrigation. The plant's secondary treatment helps protect this downstream ecosystem from nutrient pollution and organic waste.