ARA Erholungszentrum Lassee 2211 GF - Advanced Wastewater Treatment in Lassee, Austria

ARA Erholungszentrum Lassee 2211 GF is a wastewater treatment facility located in the municipality of Lassee, in the Bezirk Gänserndorf district of Niederösterreich, Austria. The plant serves a small population of 429 people and has a designed capacity of 2,000 cubic meters per day, with a reported discharge volume of 74.20 cubic meters per day. The plant employs advanced treatment processes, which go beyond the secondary treatment requirements typically mandated by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. Advanced treatment includes nutrient removal (nitrogen and phosphorus) and often disinfection, ensuring high-quality effluent suitable for sensitive receiving environments. The treated effluent is discharged into local watercourses that eventually drain into the Danube River basin, which flows into the Black Sea. The plant's advanced treatment helps protect downstream aquatic ecosystems, including the Danube's diverse fish populations and riparian habitats, from nutrient pollution and other contaminants.

The plant discharges into local streams that are part of the Danube River basin. The Danube is Europe's second-longest river, flowing through multiple countries before reaching the Black Sea. The downstream environment supports diverse aquatic life, including migratory fish species such as sturgeon, and provides important ecosystem services. Advanced treatment at this plant helps reduce nutrient loads that could otherwise contribute to eutrophication in the Black Sea.