Cascade Locks STP - Advanced Wastewater Treatment in Cascade Locks, Oregon

Cascade Locks STP is an advanced wastewater treatment facility located in Cascade Locks, Oregon, a small community in the Columbia River Gorge. The plant serves a population of 1,130 and is operated as part of the municipal infrastructure for Hood River County. Its advanced treatment level ensures high-quality effluent before discharge. The plant operates under the U.S. Clean Water Act, which requires NPDES permits for all point source discharges. For small communities like Cascade Locks, advanced treatment is often implemented to protect sensitive receiving waters. The plant's designed capacity is 1,866.20 volume units, with a current discharge volume of 374.76, indicating ample reserve capacity. The treated effluent from Cascade Locks STP ultimately reaches the Columbia River, a major waterway that flows to the Pacific Ocean. The Columbia River supports diverse aquatic life, including salmon runs, and is a critical ecological and economic resource for the region. The plant's advanced treatment helps maintain water quality in this important river system.

Cascade Locks STP discharges into the Columbia River, which flows westward to the Pacific Ocean. The Columbia River basin is a vital ecosystem supporting salmon, steelhead, and other migratory fish. The plant's advanced treatment helps protect water quality in this ecologically sensitive river corridor, which is also a key resource for recreation and hydropower.