Bad Frankenhausen Wastewater Treatment Plant: Serving Bad Frankenhausen/Kyffhäuser, Thüringen

The Bad Frankenhausen wastewater treatment plant is located in the town of Bad Frankenhausen/Kyffhäuser, within the Kyffhäuserkreis district of Thüringen, Germany. The plant serves a population of approximately 11,670 residents, classifying it as a medium-sized agglomeration under German and EU regulations. As a German facility, the plant operates under the EU Urban Waste Water Treatment Directive 91/271/EEC, which requires secondary treatment for agglomerations of this size. It is expected to meet the directive's standards for biological treatment and nutrient removal where applicable. The treated effluent is discharged into local water bodies that ultimately drain into the Unstrut River, a tributary of the Saale River, which flows into the Elbe and then the North Sea. The plant plays a key role in protecting the regional watershed and downstream aquatic ecosystems from pollution.

The plant discharges into the Unstrut River basin, which flows through the Thuringian Basin and joins the Saale River near Naumburg. The Saale then flows into the Elbe, which empties into the North Sea. The region supports diverse aquatic life and is an important corridor for migratory fish species. Protecting water quality in this basin is essential for maintaining the ecological health of the Elbe estuary and the North Sea coastal zone.