Marktgemeinde Lavamund Wastewater Treatment Plant, Lavamünd, Austria

Marktgemeinde Lavamund is a wastewater treatment plant located in Lavamünd, a town in the district of Wolfsberg, Kärnten, Austria. The plant serves a population of around 2,037 and is part of the municipal infrastructure for the region. It is situated in the Lavanttal valley, an area known for its Alpine landscape and proximity to the Lavant River. 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 4,000 m³/day and an average discharge volume of 317.44 m³/day, the facility operates well below its capacity, indicating room for future growth or seasonal variations. As an Austrian plant, it complies with national regulations that transpose EU directives, ensuring high effluent quality. The treated wastewater is discharged into the local water system, which ultimately drains into the Lavant River, a tributary of the Drava River. The Drava flows through Slovenia and Croatia before joining the Danube, which empties into the Black Sea. The plant plays a key role in protecting the Lavant River and downstream ecosystems from nutrient pollution, supporting aquatic biodiversity in the Alpine region.

The plant discharges into the Lavant River, which flows into the Drava River, a major tributary of the Danube. The Drava-Danube system supports diverse aquatic life, including fish species such as the Danube salmon and various migratory birds. The Alpine watershed is sensitive to nutrient inputs, and advanced treatment helps maintain water quality in this ecologically important corridor.