ORAN WWTP - Secondary Treatment Plant in Oran, Missouri

ORAN WWTP is a municipal wastewater treatment facility located on County Road 411 in Oran, Scott County, Missouri. The plant serves a population of 1,294 and is classified as a small agglomeration under US regulatory standards. It is situated inland, away from coastal zones, and discharges treated effluent into local waterways. The plant provides secondary treatment, which is the minimum level required by the US Clean Water Act for municipal wastewater. With a design capacity of 643.52 units and a current discharge volume of 567.81 units, the facility operates at approximately 88% capacity. As a small community plant, it is subject to state-level NPDES permits that govern effluent limits and monitoring requirements. The treated wastewater from ORAN WWTP ultimately drains into the Mississippi River basin via local tributaries. The Mississippi River system supports diverse aquatic life and serves as a major migratory corridor for birds and fish. The plant's discharge contributes to the overall water quality management in the region, which is important for downstream communities and ecosystems.

ORAN WWTP discharges into local streams that flow into the Mississippi River, one of the largest river systems in North America. The Mississippi River basin supports a wide range of aquatic species and provides critical habitat for migratory waterfowl. The plant's secondary treatment helps reduce organic pollutants and suspended solids, protecting downstream water quality in the river and its floodplain ecosystems.