Schwabisch Hall Tungental Wastewater Treatment Plant, Schwäbisch Hall, Baden-Württemberg

Schwabisch Hall Tungental is an advanced wastewater treatment plant located in the Tüngental district of Schwäbisch Hall, Baden-Württemberg, Germany. The plant serves a population of approximately 2,350 residents and has a designed capacity of 2,200 m³/day, with a current discharge volume of about 600 m³/day. As an advanced treatment facility, the plant goes beyond secondary treatment to remove nutrients such as nitrogen and phosphorus, which is typical for plants in sensitive catchment areas under the EU Urban Waste Water Treatment Directive (91/271/EEC). For agglomerations of this size (under 10,000 population equivalent), the directive requires appropriate treatment, and Germany's national implementation often mandates advanced treatment in sensitive areas. The plant discharges treated effluent into local watercourses that ultimately drain into the Kocher River, a tributary of the Neckar River, which flows into the Rhine and then the North Sea. The advanced treatment helps protect the Kocher and downstream ecosystems from eutrophication and other pollution impacts.

The plant's treated effluent enters small streams in the Tüngental area, which flow into the Kocher River near Schwäbisch Hall. The Kocher joins the Neckar River, a major tributary of the Rhine, which drains into the North Sea. The region's watershed supports diverse aquatic life, including fish species such as brown trout and grayling. Advanced treatment at this plant reduces nutrient loading, helping to prevent algal blooms and maintain water quality in the sensitive karst-influenced streams of the Swabian-Franconian forest.