Eppenschlag Kirchdorf Wastewater Treatment Plant, Marbach, Bavaria

Eppenschlag Kirchdorf is a wastewater treatment plant located in Marbach, within the municipality of Eppenschlag in the Freyung-Grafenau district of Bavaria, Germany. The plant serves a population of approximately 4,320, classifying it as a small to medium agglomeration under the EU Urban Waste Water Treatment Directive (UWWTD). As a secondary treatment facility, the plant provides biological treatment to remove organic matter and suspended solids, meeting the standard requirements for inland discharges under the EU UWWTD. The designed capacity of 4,100 m³/day and actual discharge volume of 927.57 m³/day indicate operational headroom for future growth or seasonal variations. The plant's treated effluent is discharged into local watercourses that ultimately drain into the Danube River basin, contributing to the Black Sea watershed. The surrounding region is characterized by forested hills and agricultural land, with the plant playing a key role in protecting local streams and groundwater quality.

The plant discharges into small streams in the Bavarian Forest region, which flow into the Ilz River and eventually the Danube River, reaching the Black Sea. The area supports diverse aquatic life and is part of a sensitive ecosystem that requires effective nutrient removal to prevent eutrophication downstream.