Aidhausen Wastewater Treatment Plant, Kerbfeld, Bavaria, Germany

The Aidhausen wastewater treatment plant is located in Kerbfeld, a district of Aidhausen in the Bavarian region of Hofheim in Unterfranken, Germany. It served a small population of 891 people, classifying it as a small agglomeration under the EU Urban Waste Water Treatment Directive (91/271/EEC). The plant is currently closed. As a secondary treatment facility, it met the EU standard for biological treatment required for agglomerations of this size. The designed capacity was 2,800 cubic meters per day, with a recorded discharge volume of 225.49 cubic meters per day. The plant operated under Germany's national implementation of the EU directive, which mandates secondary treatment for all inland plants serving between 2,000 and 10,000 population equivalents. The plant's discharge ultimately flows into the local watershed, part of the Main river basin, which drains into the Rhine and then the North Sea. The surrounding area is rural, with agriculture and small settlements, and the plant's operation helped protect local streams and groundwater from untreated sewage.

The plant discharged into the local watershed within the Main river basin, which flows into the Rhine and eventually the North Sea. The region is characterized by agricultural land use and small villages, making the protection of local water bodies important for both ecological health and drinking water sources. The secondary treatment provided by the plant reduced organic pollutants and suspended solids, supporting the ecological integrity of downstream aquatic habitats.