Mittleres Rodltal Wastewater Treatment Plant, Schauerleithen, Oberösterreich

Mittleres Rodltal is a wastewater treatment plant located in Schauerleithen, a locality in the municipality of Zwettl an der Rodl, Bezirk Urfahr-Umgebung, Oberösterreich, Austria. The plant serves a population of about 4,370 people, placing it in the small to medium agglomeration category under Austrian and EU regulations. As a plant of this scale 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 plant is situated inland, away from coastal areas, and its treated effluent is discharged into the local water system, likely the Rodl River or its tributaries. The receiving water body is part of the Danube River basin, which ultimately drains into the Black Sea. The plant plays a key role in protecting local water quality in the Rodl Valley, supporting aquatic life and downstream ecosystems in the Danube watershed.

The plant discharges into the Rodl River, a tributary of the Danube, which flows through Upper Austria before joining the Danube near Linz. The Danube then continues through several countries to the Black Sea. The local watershed supports diverse aquatic habitats, including fish populations and riparian vegetation, making effective wastewater treatment essential for maintaining ecological balance in this sensitive river system.