ARA GAV Mittleres Pittental 4635 NK Wastewater Treatment Plant, Seebenstein, Austria

ARA GAV Mittleres Pittental 4635 NK is a wastewater treatment plant located in Seebenstein, in the state of Niederösterreich, Austria. The plant serves a population of approximately 7,900, placing it in the small to medium agglomeration category under EU classification. 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 directive also mandates more advanced treatment if the receiving waters are designated as sensitive areas. Compliance with national and EU standards is expected. The treated effluent from the plant is discharged into local watercourses that eventually drain into the Danube River basin, which flows into the Black Sea. The plant plays a key role in protecting the region's water quality and supporting the ecological health of downstream aquatic habitats.

The plant discharges into the Pittental region's water network, which feeds into the Schwarza River, a tributary of the Leitha River, ultimately reaching the Danube River and the Black Sea. This watershed supports diverse aquatic life and is important for regional biodiversity. The plant's operations help maintain water quality in this ecologically sensitive area.