Gurten Wastewater Treatment Plant, Oberösterreich, Austria

The Gurten wastewater treatment plant is located in the municipality of Gurten, Bezirk Ried, in the state of Oberösterreich, Austria. It serves a population of approximately 1,395 people, classifying it as a small agglomeration under Austrian and EU regulations. The plant employs advanced treatment processes, which go beyond the secondary treatment standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. With a designed capacity of 2,500 m³/day and an actual discharge volume of 537.70 m³/day, the facility operates well below its capacity, indicating room for future growth. The treated effluent is discharged into local water bodies that ultimately drain into the Danube River basin. The plant's advanced treatment helps protect the sensitive aquatic ecosystems of the Danube watershed, which supports diverse fish species and migratory birds. Its inland location reduces direct marine impact, but the cumulative effect on downstream water quality remains important.

The plant discharges into small streams that flow into the Inn River, a major tributary of the Danube. The Danube basin is a critical European waterway supporting diverse aquatic life and providing drinking water for millions. Advanced treatment at Gurten helps reduce nutrient loading, protecting downstream ecosystems from eutrophication and maintaining water quality for biodiversity.