DOLLNSTEIN Wastewater Treatment Plant, Breitenfurt, Bavaria

The DOLLNSTEIN wastewater treatment plant is located in Breitenfurt, a locality within the municipality of Dollnstein in the Bavarian district of Eichstätt, Germany. The plant serves a population of 2,216 and operates with secondary treatment, which is the standard biological treatment stage required under the EU Urban Waste Water Treatment Directive for agglomerations of this size. As a secondary treatment facility, the plant removes organic matter and suspended solids through biological processes. Its designed capacity is 4,000 cubic meters per day, and it currently discharges an average of 560.82 cubic meters of treated wastewater daily. The plant is part of Germany's extensive wastewater infrastructure, which is regulated under national law implementing EU directives. The treated effluent from the plant is discharged into local watercourses that ultimately drain into the Danube River basin. The region is characterized by the Altmühl Valley, a ecologically sensitive area that supports diverse aquatic life and is part of the larger Danube watershed. Proper treatment helps protect downstream water quality in the Danube and its tributaries.

The DOLLNSTEIN plant discharges into local streams that flow into the Altmühl River, a tributary of the Danube. The Altmühl Valley is an ecologically sensitive region with diverse aquatic habitats, supporting species such as the Danube salmon and various migratory fish. The plant's secondary treatment helps reduce nutrient and organic pollution, protecting the downstream Danube ecosystem and the Black Sea, into which the Danube ultimately drains.