Franking Wastewater Treatment Plant, St. Pantaleon, Oberösterreich

Franking is a wastewater treatment plant located in St. Pantaleon, in the Bezirk Braunau district of Oberösterreich, Austria. The plant serves a population of approximately 1,970 people, making it a small agglomeration under Austrian and EU classification. It is situated inland, away from coastal areas, and treats wastewater from the local community. The plant employs advanced treatment processes, which go beyond the secondary treatment 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 241.60 m³/day, the plant operates well below its capacity, indicating room for future growth or seasonal variations. The facility is part of Austria's comprehensive wastewater infrastructure, which is regulated under national laws transposing EU directives. The treated effluent is discharged into local water bodies that ultimately drain into the Danube River basin. The Danube is a major European waterway flowing into the Black Sea, supporting diverse aquatic ecosystems. The advanced treatment ensures that nutrient and pollutant loads are minimized, protecting downstream water quality and ecological health in the Danube catchment.

The plant discharges into local streams that feed into the Danube River basin, which flows through several countries before reaching the Black Sea. The Danube supports a rich diversity of fish and bird species and is an important migratory corridor. Advanced treatment at Franking helps reduce nutrient inputs, mitigating eutrophication risks in downstream lakes and the Black Sea coastal zone.