Neudau Wastewater Treatment Plant - Steiermark, Austria

The Neudau wastewater treatment plant is located in the town of Neudau, in the Bezirk Hartberg-Fürstenfeld district of Steiermark, Austria. It serves a population of 1,756 and operates with advanced treatment technology, ensuring high-quality effluent. The plant has a designed capacity of 2,200 m³/day and currently discharges 303.15 m³/day of treated wastewater. As an Austrian facility, it operates under the EU Urban Waste Water Treatment Directive 91/271/EEC, which requires appropriate treatment for small agglomerations. The advanced treatment level indicates that the plant likely employs nutrient removal to protect sensitive receiving waters. The treated effluent is discharged into local watercourses that drain into the Lafnitz River, a tributary of the Raab River, which ultimately flows into the Rába River and then the Danube River basin. This connection to the Danube highlights the plant's role in protecting downstream ecosystems in the Danube Delta and Black Sea.

The Neudau plant discharges into the local drainage network that feeds the Lafnitz River, a tributary of the Raab River. The Raab flows into the Rába River in Hungary, which joins the Danube near Győr. The Danube carries water through several countries to the Black Sea. The region's aquatic ecosystems support diverse species, including fish and invertebrates, and the advanced treatment helps maintain water quality in this transboundary river system.