ARA Stockerau 1471 KO - Wastewater Treatment Plant in Stockerau, Austria

ARA Stockerau 1471 KO is a municipal wastewater treatment plant located in Stockerau, Niederösterreich, Austria. The plant serves a population of approximately 23,000 people, classifying it as a medium agglomeration under EU regulations. As a plant in Austria, 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. The plant's treated effluent is discharged into local water bodies that ultimately drain into the Danube River basin. The Danube is a major European waterway supporting diverse aquatic ecosystems and providing water for millions of people downstream.

The plant discharges into the local water network that feeds into the Danube River, which flows through Central and Eastern Europe before reaching the Black Sea. The Danube basin supports a wide range of aquatic life, including several fish species and migratory birds. Protecting water quality in this basin is critical for maintaining ecological balance and ensuring safe water for downstream communities.