Neumarkt Wastewater Treatment Plant, Sankt Marein bei Neumarkt, Steiermark

Neumarkt wastewater treatment plant is located in Sankt Marein bei Neumarkt, a municipality in the Bezirk Murau district of Steiermark, Austria. The plant serves a population equivalent of 7,571, placing it in the small to medium agglomeration category under EU classification. As an Austrian facility, the plant operates under the EU Urban Waste Water Treatment Directive 91/271/EEC, which requires secondary treatment for agglomerations of this size. The directive also mandates appropriate treatment before discharge into inland waters, ensuring compliance with national and European standards. The treated effluent is discharged into local watercourses that drain into the Mur River, a major tributary of the Drava and ultimately the Danube River basin. The plant plays a key role in protecting the water quality of these rivers and the downstream ecosystems, including the Danube Delta.

The plant discharges into the Mur River catchment, which flows into the Drava and then the Danube River before reaching the Black Sea. This watershed supports diverse aquatic life and is an important ecological corridor in Central Europe. The plant's treatment helps maintain water quality in this sensitive river system.