ARA Mistelbach 84 MI Wastewater Treatment Plant, Mistelbach, Austria

ARA Mistelbach 84 MI is a wastewater treatment plant located in Mistelbach, Niederösterreich, Austria. The facility serves a population of approximately 19,500, classifying it as a medium-sized agglomeration under EU regulations. The plant is situated inland, away from coastal areas, and its operations are integrated into the regional water management infrastructure. As an Austrian plant, ARA Mistelbach 84 MI operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment for agglomerations of this size. The directive also requires more advanced treatment if the receiving waters are designated as sensitive areas. The plant's treatment processes are designed to meet these standards, ensuring compliance with national and EU regulations. The treated effluent from the plant is discharged into local water bodies that ultimately drain into the Danube River basin. The Danube is a major European waterway that flows into the Black Sea, supporting diverse aquatic ecosystems and providing water for various uses. The plant plays a key role in protecting the water quality of these downstream environments.

The plant discharges into local streams that are part of the Danube River basin. The Danube flows through multiple countries before reaching the Black Sea, supporting a wide range of aquatic life and providing critical habitat for migratory fish species. The region's water quality is influenced by agricultural runoff and urban discharges, making effective wastewater treatment essential for maintaining ecological balance.