OREGON WWTP - Secondary Treatment Plant in Oregon, Missouri

OREGON WWTP is a municipal wastewater treatment facility located in Oregon, Holt County, Missouri. The plant serves a small population of 857 residents, providing secondary treatment to meet Clean Water Act standards. Its designed capacity is 378.54 megaliters, with an annual discharge volume of 283.91 megaliters. The plant employs secondary treatment, a biological process that removes organic matter and suspended solids. As a small facility in the United States, it operates under the National Pollutant Discharge Elimination System (NPDES) permit program, which sets effluent limits to protect water quality. The plant's performance is monitored by state authorities to ensure compliance with federal regulations. The treated effluent is discharged into local waterways that drain into the Missouri River watershed, ultimately reaching the Mississippi River and the Gulf of Mexico. The plant plays a key role in protecting downstream aquatic ecosystems from nutrient pollution and pathogens, supporting regional water quality goals.

The plant discharges into the Missouri River basin, which flows into the Mississippi River and then the Gulf of Mexico. This watershed supports diverse aquatic life and is a critical migratory corridor for birds and fish. Nutrient loading from wastewater can contribute to hypoxia in the Gulf, making effective treatment essential for downstream ecosystem health.