Gemeinde Rennweg Wastewater Treatment Plant, Krems in Kärnten, Austria

Gemeinde Rennweg is an advanced wastewater treatment plant located in Krems in Kärnten, in the state of Kärnten, Austria. The plant serves a population of approximately 1,763 people, making it a small-scale municipal facility. It is situated in the Alpine region of southern Austria, near the Katschberg mountain pass. 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. Its designed capacity is 3,700 m³/day, and it currently discharges 305.25 m³/day of treated wastewater, indicating significant reserve capacity. The facility is operated as part of the municipal infrastructure for the Krems in Kärnten area. The treated effluent is discharged into a local watercourse that eventually drains into the Drau River, a major tributary of the Danube. The Drau River flows through the Alps and supports diverse aquatic life, including fish species such as grayling and brown trout. The advanced treatment helps protect the sensitive Alpine watershed and downstream ecosystems.

The plant discharges into a local stream that flows into the Drau River, which is part of the Danube basin. The Drau River is an ecologically sensitive Alpine river that supports diverse aquatic life, including fish species such as grayling and brown trout. The advanced treatment level helps minimize nutrient and pollutant loads, protecting the downstream water quality in the Drau and ultimately the Danube Delta ecosystem.