Tettau Wastewater Treatment Plant, Sattelgrund, Bayern, Germany

The Tettau wastewater treatment plant is located in Sattelgrund, a locality within the municipality of Tettau in the Landkreis Kronach district of Bayern, Germany. It serves a population of approximately 2,200 people, placing it in the small agglomeration category under German and EU regulations. The plant employs advanced treatment processes, which go beyond the secondary treatment standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. With a designed capacity of 4,500 m³/day and an actual discharge volume of 556.77 m³/day, the facility operates well below its capacity, indicating room for future growth or seasonal variations. The treated effluent is discharged into the local watershed, which ultimately drains into the Main River basin and then into the Rhine River. The Rhine is a major European waterway that flows into the North Sea, supporting diverse aquatic ecosystems and providing drinking water for millions. Advanced treatment helps protect these downstream environments from nutrient pollution and other contaminants.

The plant discharges into the local tributaries of the Main River, which flows into the Rhine River and eventually reaches the North Sea. The Rhine basin is ecologically significant, supporting diverse fish species, migratory birds, and aquatic plants. Advanced treatment at this plant helps reduce nutrient loads, protecting downstream water quality and biodiversity in this important European watershed.