SKA Oberriexingen Wastewater Treatment Plant, Oberriexingen, Baden-Württemberg

SKA Oberriexingen is an advanced wastewater treatment plant located in Oberriexingen, a town in the Ludwigsburg district of Baden-Württemberg, Germany. The plant serves a population of approximately 4,900 residents, reflecting a medium-sized agglomeration in the region. The plant provides advanced treatment, which goes beyond the secondary treatment required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. Its designed capacity is 4,900 population equivalents, and it discharges 689.91 cubic meters of treated wastewater daily. The plant operates under Germany's strict national water regulations, which implement the EU directive and often require tertiary treatment for sensitive areas. The treated effluent is discharged into a local water body that ultimately drains into the Enz River, a tributary of the Neckar River, which flows into the Rhine River and eventually the North Sea. The plant plays a key role in protecting the local watershed and downstream aquatic ecosystems from nutrient pollution.

The plant discharges into a local watercourse that feeds the Enz River, part of the Neckar basin, which flows into the Rhine River and ultimately the North Sea. The region is ecologically sensitive, supporting diverse aquatic life and serving as a migratory corridor for fish species. Advanced treatment helps reduce nutrient loads, protecting downstream water quality and preventing eutrophication in the Rhine delta.