ONG WWTP - Secondary Treatment Plant in Thayer County, Nebraska

ONG WWTP is a municipal wastewater treatment facility located on Road 6600 in Thayer County, Nebraska, United States. The plant serves a small community of 67 people, reflecting its role in rural wastewater management within the state. The plant provides secondary treatment, which is the standard level required by the US Clean Water Act for most municipal facilities. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids. The plant has a designed capacity of 37.85 units and currently discharges a similar volume, indicating full utilization. Treated effluent from ONG WWTP is discharged into local waterways that ultimately drain into the Missouri River basin. This region is part of the larger Mississippi River watershed, which supports diverse aquatic ecosystems and provides water for agriculture and communities downstream. The plant's compliance with NPDES permits helps protect these water resources.

ONG WWTP discharges into local streams that flow into the Big Blue River, a tributary of the Missouri River. The Missouri River then joins the Mississippi River, which empties into the Gulf of Mexico. This watershed supports important aquatic habitats and is used for irrigation and recreation. The plant's secondary treatment helps reduce nutrient loading, which is critical for preventing downstream eutrophication in the Gulf of Mexico.