MAUPIN STP - Secondary Wastewater Treatment Plant in Maupin, Oregon

MAUPIN STP is a municipal wastewater treatment facility located in Maupin, Oregon, United States. The plant serves a population of approximately 1,108 residents in this small community along the Deschutes River. The plant provides secondary treatment, which is the standard level required under the U.S. Clean Water Act for municipal wastewater. With a designed capacity of 378.54 cubic meters per day and an average discharge volume of 302.83 cubic meters per day, the facility operates well within its capacity. The treated effluent is discharged into the local watershed, which ultimately drains into the Deschutes River, a major tributary of the Columbia River. The Deschutes River supports diverse aquatic life, including salmon and steelhead, making the plant's treatment performance important for downstream water quality.

The plant discharges into the Deschutes River basin, which flows north to join the Columbia River. The Deschutes River is a critical habitat for native fish species, including threatened and endangered salmonids. The river's water quality is sensitive to nutrient loading, and the plant's secondary treatment helps protect downstream ecosystems.