Oberaurach OT Kirchaich Wastewater Treatment Plant, Bavaria

Oberaurach OT Kirchaich is a wastewater treatment plant located in the municipality of Oberaurach, in the Bavarian district of Haßberge, Germany. The plant served a population of around 1,535 people, classifying it as a small agglomeration under the EU Urban Waste Water Treatment Directive (91/271/EEC). As a secondary treatment facility, the plant provided biological treatment to reduce organic matter and suspended solids. The designed capacity was 4,900 m³/day, with an average discharge volume of 388.47 m³/day. The plant operated under Germany's implementation of the EU UWWTD, which requires secondary treatment for inland agglomerations of this size. The treated effluent was discharged into a local watercourse within the Main River basin, which ultimately drains into the Rhine River and then the North Sea. The plant's location in a rural area meant its discharge contributed to the ecological health of small streams and the broader watershed.

The plant's discharge entered a tributary of the Main River, part of the Rhine basin, which flows through central Europe to the North Sea. The local watershed supports diverse aquatic life and is important for regional biodiversity. The plant's secondary treatment helped protect downstream water quality in this ecologically sensitive area.