Pernegg Wastewater Treatment Plant, Traföß, Steiermark, Austria

Pernegg wastewater treatment plant is located in Traföß, a locality within the municipality of Pernegg an der Mur in the Bezirk Bruck-Mürzzuschlag district of Steiermark, Austria. The plant serves a small population of 583 residents, reflecting its role in a rural alpine setting. As part of Austria's wastewater infrastructure, it contributes to the protection of local water resources in the Mur River basin. The plant employs advanced treatment processes, ensuring a high level of effluent quality before discharge. With a designed capacity of 2,800 m³/day and an actual discharge volume of 327.41 m³/day, the plant operates well below its capacity, indicating ample headroom for future growth. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), small agglomerations like this are typically required to provide appropriate treatment, and the advanced level here exceeds the minimum secondary treatment standard. The treated effluent is discharged into the local watershed, which ultimately drains into the Mur River. The Mur flows through Steiermark and into Slovenia, eventually reaching the Drava and the Danube. The plant's advanced treatment helps safeguard the ecological health of the Mur and downstream water bodies, supporting aquatic life and water quality in this alpine region.

The plant discharges into the Mur River basin, a major tributary of the Drava and Danube rivers. The Mur supports diverse aquatic ecosystems, including fish species such as grayling and brown trout. Advanced treatment at this plant reduces nutrient loads, protecting downstream water quality in the Mur and its receiving waters, which are important for recreation and biodiversity in the Alpine region.