SKA Heroldstatt Wastewater Treatment Plant, Blaubeuren, Baden-Württemberg

SKA Heroldstatt is an advanced wastewater treatment plant located in Blaubeuren, Baden-Württemberg, Germany. The plant serves a population of approximately 3,550 people and has a designed capacity of 7,100 m³/day, with a current discharge volume of 698.48 m³/day. As an advanced treatment facility, SKA Heroldstatt goes beyond secondary treatment to remove nutrients such as nitrogen and phosphorus. This level of treatment is typical for plants discharging into sensitive water bodies under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires advanced treatment for agglomerations above 10,000 population equivalent in sensitive areas. Although the plant serves a smaller population, its advanced treatment reflects a commitment to high environmental standards. The treated effluent is discharged into local watercourses that ultimately drain into the Danube River basin. The plant's location in the Swabian Alb region, a karst landscape, makes groundwater protection particularly important. The advanced treatment helps safeguard the receiving waters and downstream ecosystems, including the Danube's diverse aquatic habitats.

The plant discharges into the Danube River basin, which flows through Central and Eastern Europe before reaching the Black Sea. The Swabian Alb region features karst geology, where groundwater is highly vulnerable to contamination. The advanced treatment at SKA Heroldstatt helps protect the sensitive karst aquifers and the downstream Danube ecosystem, which supports diverse fish species and migratory birds.