Marktheidenfeld Wastewater Treatment Plant, Lengfurt, Bavaria

The Marktheidenfeld wastewater treatment plant is located in Lengfurt, a district of Marktheidenfeld in the Main-Spessart district of Bavaria, Germany. It serves a population of approximately 15,614, classifying it as a medium-sized agglomeration under EU regulations. The plant is situated near the Main River, which is a major tributary of the Rhine. As a German facility, the plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment for agglomerations of this size. The directive also requires appropriate treatment to protect sensitive areas, which may include nutrient removal. The plant's design and operation are subject to German water management laws and local permitting by the Bavarian environmental authority. The treated effluent is discharged into the Main River, which flows into the Rhine and eventually the North Sea. The Main River supports diverse aquatic life and is an important waterway for the region. The plant plays a key role in maintaining water quality in the Main basin, protecting downstream ecosystems and drinking water resources.

The plant discharges into the Main River, a major tributary of the Rhine, which drains into the North Sea. The Main River supports a variety of fish species and is an important ecological corridor. The surrounding region includes agricultural areas and small towns, making the plant's nutrient removal important for preventing eutrophication in downstream waters.