Ammerndorf Wastewater Treatment Plant, Bavaria, Germany

The Ammerndorf wastewater treatment plant is located in the town of Ammerndorf, in the district of Fürth, Bavaria, Germany. It served a population of approximately 1,965 people, classifying it as a small agglomeration under the EU Urban Waste Water Treatment Directive (UWWTD). The plant is currently closed. The facility provided secondary treatment, which is the minimum required by the EU UWWTD for freshwater discharges from agglomerations of this size. Its designed capacity was 4,500 m³/day, with an average discharge volume of 337.17 m³/day. The plant operated under Germany's national implementation of the EU directive, which mandates strict effluent standards for biological oxygen demand and suspended solids. The treated effluent was discharged into a local watercourse that ultimately drains into the Regnitz River, a tributary of the Main River, which flows into the Rhine River and eventually the North Sea. The plant's operation helped protect the local watershed from nutrient pollution and supported aquatic life in the downstream ecosystem.

The plant discharged into a small stream that feeds into the Regnitz River, part of the Rhine basin. The Regnitz flows through the Franconian region and joins the Main near Bamberg. The Rhine basin supports diverse aquatic ecosystems and is an important migratory corridor for fish. The plant's secondary treatment helped reduce organic pollution and protect water quality in this sensitive river system.