ARA Altlichtenwarth 1706 MI - Advanced Wastewater Treatment Plant in Großkrut, Austria

ARA Altlichtenwarten 1706 MI is an advanced wastewater treatment plant located in the municipality of Großkrut, in the Mistelbach district of Niederösterreich, Austria. The plant serves a small population of 607 people, reflecting its role in a rural community. It operates under the Austrian water management framework, which implements the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this scale. The plant employs advanced treatment processes, ensuring a high level of pollutant removal before discharge. It has a designed capacity of 2016 m³/day, with a reported discharge volume of 170 m³/day, indicating it operates well below its capacity. The facility is situated inland, more than 50 km from the coast, and its treated effluent is discharged into local watercourses that ultimately drain into the Danube River basin. The plant's advanced treatment level supports the protection of downstream water bodies, including the Danube and the Black Sea. By removing nutrients and other contaminants, it helps maintain water quality in the region's aquatic ecosystems, which support diverse fish populations and migratory bird species.

The plant discharges into local streams that flow into the Thaya River, a tributary of the Morava River, which joins the Danube near Bratislava. The Danube then carries the water to the Black Sea. This watershed supports diverse aquatic life, including fish species such as barbel and nase, and provides habitat for migratory birds along the Danube floodplains.