Rottenbach Wastewater Treatment Plant, Röhrach, Bavaria

Rottenbach wastewater treatment plant is located in the Röhrach district of Heßdorf, in the Bavarian administrative region of Erlangen-Höchstadt, Germany. The plant serves a population equivalent of 9,600, classifying it as a medium agglomeration under EU regulations. As a German facility, the plant is subject to the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size. The plant likely employs biological treatment processes to meet the directive's standards for organic matter and nutrient removal. The treated effluent from Rottenbach is discharged into local watercourses that eventually drain into the Regnitz River, a tributary of the Main River, which flows into the Rhine. The plant plays a key role in protecting the water quality of these rivers and the downstream ecosystems.

The plant's discharge enters small streams in the Regnitz River basin, which flows into the Main River and ultimately the Rhine. This watershed supports diverse aquatic life and is an important corridor for migratory fish. The plant's treatment helps maintain water quality in this ecologically sensitive region.