ARA AV Anzbach Laabental 2531 PL Wastewater Treatment Plant, Neulengbach, Austria

ARA AV Anzbach Laabental 2531 PL is a wastewater treatment plant located in Neulengbach, within the state of Niederösterreich, Austria. The facility serves a population of approximately 30,844, placing it in the medium agglomeration category under Austrian and EU regulations. As an Austrian plant, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size. The plant's treatment processes meet national standards for effluent quality, ensuring compliance with regulatory requirements for discharge into local water bodies. The treated effluent is discharged into the local watershed, which ultimately drains into the Danube River basin. The Danube is a major European waterway supporting diverse aquatic ecosystems and providing water for communities downstream. The plant plays a key role in protecting water quality in this sensitive river system.

The plant discharges into the local catchment of the Danube River basin, one of Europe's most significant river systems. The Danube flows through multiple countries before reaching the Black Sea, supporting diverse aquatic life and providing critical habitat for migratory fish species. The plant's operations help maintain water quality in this ecologically important watershed, reducing nutrient and pollutant loads that could otherwise impact downstream ecosystems.