ARA Martinsberg 4475 ZT - Advanced Wastewater Treatment in Walpersdorf, Austria

ARA Martinsberg 4475 ZT is an advanced wastewater treatment plant located in Walpersdorf, a locality in the municipality of Martinsberg, Bezirk Zwettl, Niederösterreich, Austria. The plant serves a population of 1,305 and has a designed capacity of 2,500 cubic meters per day, with a discharge volume of 196.70 cubic meters per day. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. As an Austrian facility, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires appropriate treatment for agglomerations of this size. For plants serving fewer than 2,000 population equivalents, the directive mandates secondary treatment, but Austria often implements higher standards. The treated effluent is discharged into local watercourses that eventually drain into the Danube River basin, contributing to the Black Sea watershed. The plant plays a key role in protecting the region's water quality and supporting the ecological health of downstream aquatic environments.

The plant discharges into small streams in the Waldviertel region, which flow into the Kamp River, a tributary of the Danube. The Danube ultimately drains into the Black Sea. The local watershed supports diverse aquatic life and is part of a ecologically sensitive area with forested landscapes and agricultural land use.