Kleinostheim AV Untermain Wastewater Treatment Plant, Mainflingen, Hessen

Kleinostheim AV Untermain is a wastewater treatment plant located in Mainflingen, a district of Mainhausen in the Offenbach district of Hessen, Germany. The plant serves a population of approximately 51,936, placing it in the medium agglomeration category under EU regulations. As a German facility, the plant is subject to the EU Urban Waste Water Treatment Directive 91/271/EEC, which requires secondary treatment for agglomerations of this size. The plant's treatment processes and capacity details are not publicly available, but the regulatory framework ensures compliance with national and EU standards for effluent quality. The treated wastewater from Kleinostheim AV Untermain is discharged into the local water system, which ultimately drains into the Main River, a major tributary of the Rhine. The Rhine basin supports diverse aquatic life and is an important ecological corridor in Central Europe. The plant plays a key role in protecting water quality in this densely populated and industrialized region.

The plant discharges into the local watershed that feeds the Main River, which flows into the Rhine River and eventually the North Sea. The Rhine basin is ecologically sensitive, supporting diverse fish species and serving as a critical migratory route for aquatic life. The plant's operations help maintain water quality in this heavily utilized river system.