Pischelsdorf Wastewater Treatment Plant, Steiermark, Austria

The Pischelsdorf wastewater treatment plant is located in Pischelsdorf am Kulm, Steiermark, Austria. It serves a population of approximately 2,045 people, classifying it as a small agglomeration under the EU Urban Waste Water Treatment Directive (91/271/EEC). The plant is situated inland, away from coastal areas. The facility employs advanced treatment processes, which exceed the EU's minimum requirement of secondary treatment for agglomerations of this size. Advanced treatment typically includes nutrient removal (nitrogen and phosphorus) to protect sensitive water bodies. The plant's designed capacity is 2,660 m³/day, with an actual discharge volume of 425 m³/day, indicating ample reserve capacity. The treated effluent is discharged into local waterways that ultimately drain into the Danube River basin and the Black Sea. The plant plays a key role in maintaining water quality in the region, supporting aquatic life and downstream ecosystems. Its advanced treatment ensures compliance with stringent EU standards for sensitive areas.

The plant discharges into small streams in the Steiermark region, which flow into the Raab River and eventually the Danube River basin, reaching the Black Sea. The area supports diverse aquatic habitats, and advanced treatment helps protect downstream water quality, particularly for nutrient-sensitive ecosystems.