Anselmo WWTP - Secondary Treatment Plant in Custer County, Nebraska

Anselmo WWTP is a municipal wastewater treatment facility located in Custer County, Nebraska, United States. The plant serves a small population of 189 residents, reflecting its role in a rural community. It operates under the regulatory framework of the US Clean Water Act, which governs wastewater discharges through the National Pollutant Discharge Elimination System (NPDES) permit program. The plant provides secondary treatment, a standard level that removes biodegradable organic matter and suspended solids. Its designed capacity matches the current discharge volume of 37.85 units, indicating full utilization. As a small facility, it is subject to state-level oversight for compliance with effluent limits. The treated effluent is discharged into local waterways that eventually drain into the Platte River basin, a major tributary of the Missouri River. This watershed supports diverse aquatic life and agricultural activities. The plant's location inland, far from coastal zones, reduces direct marine impact, but its discharge contributes to the overall water quality of the regional river system.

The plant's discharge enters local streams that flow into the Platte River, a key waterway in Nebraska that supports irrigation, wildlife habitat, and recreation. The Platte River eventually joins the Missouri River, which drains into the Mississippi River and ultimately the Gulf of Mexico. The watershed is ecologically sensitive, hosting migratory bird species and fish populations that depend on clean water.