Kirchbichl Wastewater Treatment Plant, Tirol, Austria

Kirchbichl wastewater treatment plant is located in the municipality of Kirchbichl in the Bezirk Kufstein, Tirol, Austria. The plant serves a population of approximately 73,376 people, classifying it as a large agglomeration under EU regulations. As a plant in Austria, Kirchbichl 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 sensitive to eutrophication. The plant's treatment process and capacity are managed to meet these regulatory standards. The treated effluent is discharged into the Inn River, a major tributary of the Danube. The Inn River flows through the Alpine region and eventually joins the Danube, which drains into the Black Sea. The plant plays a crucial role in protecting the water quality of the Inn River and downstream ecosystems, supporting aquatic life and recreational uses.

The plant discharges into the Inn River, which flows through the Austrian Alps and joins the Danube near Passau, Germany. The Danube then empties into the Black Sea. The Inn River supports diverse aquatic life, including fish species such as grayling and brown trout. The plant's treatment helps maintain water quality in this ecologically sensitive alpine river system.