Rott Wastewater Treatment Plant, Rott, Bayern, Germany

The Rott wastewater treatment plant is located in the municipality of Rott, in the Landkreis Landsberg am Lech district of Bayern, Germany. It serves a population of approximately 3,000, classifying it as a small agglomeration under the EU Urban Waste Water Treatment Directive (UWWTD). The plant is situated inland, away from coastal areas, and plays a key role in managing local wastewater. As a secondary treatment facility, Rott provides biological treatment to reduce organic matter and suspended solids. The plant has a designed capacity of 4,500 cubic meters per day, with an average discharge volume of about 984 cubic meters per day, indicating operational headroom. Under the EU UWWTD, secondary treatment is the standard requirement for freshwater discharges from agglomerations of this size, ensuring compliance with European environmental standards. The treated effluent from Rott is discharged into the local watershed, which ultimately drains into the Lech River, a tributary of the Danube. The Danube River basin is one of Europe's most significant hydrological systems, supporting diverse aquatic ecosystems and providing water for millions. The plant's operation helps protect downstream water quality in the Lech and Danube rivers, contributing to the ecological health of the region.

The Rott plant discharges into the Lech River basin, which flows into the Danube River and eventually the Black Sea. The Lech is a dynamic alpine river that supports diverse aquatic life, including fish species such as grayling and brown trout. The plant's secondary treatment reduces nutrient loads, helping to prevent eutrophication in downstream waters and maintaining the ecological balance of the Danube basin.