ARA GAV Oberer Weidenbach 3712 GF Wastewater Treatment Plant, Bad Pirawarth, Austria

ARA GAV Oberer Weidenbach 3712 GF is a wastewater treatment plant located in the Katastralgemeinde Pirawarth, Bad Pirawarth, in the Bezirk Gänserndorf, Niederösterreich, Austria. The plant serves a population of 5,080, placing it in the small to medium agglomeration category under EU classification. As a plant in Austria, it 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 European environmental standards. The plant discharges into local watercourses that are part of the Danube basin, ultimately flowing into the Black Sea. Its operations help protect the region's aquatic ecosystems and support the ecological health of downstream environments.

The plant is located inland in the Weinviertel region of Niederösterreich, within the Danube River basin. Treated effluent likely enters small streams that feed into the March or Danube rivers, eventually reaching the Black Sea. The area supports diverse aquatic life and agricultural activities, making effective wastewater treatment crucial for maintaining water quality and ecosystem balance.