KA Rollshausen Wastewater Treatment Plant, Rollshausen, Niedersachsen

KA Rollshausen is a municipal wastewater treatment plant located in Rollshausen, a village in the Samtgemeinde Gieboldehausen, Landkreis Göttingen, Niedersachsen, Germany. The plant serves a population of approximately 14,800, classifying it as a medium-sized agglomeration under European Union regulations. As a German plant of this scale, it is subject to the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment as a minimum standard. For agglomerations between 10,000 and 150,000 population equivalents, the directive mandates secondary treatment, with tertiary treatment required in sensitive areas. The plant's treatment processes are designed to meet these regulatory standards. The treated effluent from KA Rollshausen is discharged into local watercourses that drain into the Weser river basin, ultimately reaching the North Sea. The plant plays a key role in protecting the region's water quality, supporting aquatic life in the receiving streams and contributing to the ecological health of the Weser watershed.

The plant discharges into local streams that are part of the Weser river basin, which flows northward through Niedersachsen to the North Sea. The Weser basin supports diverse aquatic ecosystems, including fish species such as salmon and sea trout, and is an important migratory corridor. The plant's treatment helps maintain water quality in this ecologically sensitive watershed.