Andorf Wastewater Treatment Plant, Andorf, Oberösterreich

The Andorf wastewater treatment plant is located in the town of Andorf, in the Bezirk Schärding district of Oberösterreich, Austria. It serves a population of approximately 4,852 people, classifying it as a small 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 ensures that wastewater is treated to protect the environment and public health. The treated effluent is discharged into local watercourses that eventually drain into the Danube River basin, contributing to the overall water quality of the region. The plant plays a key role in safeguarding the local aquatic environment and downstream ecosystems.

The plant discharges into small streams in the Innviertel region, which flow into the Inn River and ultimately the Danube River. The Danube is a major European waterway supporting diverse aquatic life and providing drinking water for millions. The plant's treatment helps protect this sensitive river system from nutrient pollution and pathogens.