ARA Alland 1386 BN Wastewater Treatment Plant, Alland, Austria

ARA Alland 1386 BN is a wastewater treatment plant located in Alland, a municipality in the district of Baden in Niederösterreich, Austria. The plant serves a population of approximately 5,880 people, placing it in the small agglomeration category under EU regulations. As a plant of this scale in Austria, it is subject to the EU Urban Waste Water Treatment Directive 91/271/EEC, which requires appropriate treatment before discharge. Austrian plants typically employ secondary or tertiary treatment to meet stringent national and EU standards. The plant discharges treated wastewater into the local watershed, which ultimately drains into the Danube River basin. The Danube is a major European waterway supporting diverse aquatic ecosystems and providing water for agriculture and industry downstream.

The treated effluent from ARA Alland enters the local tributaries of the Schwechat River, which flows into the Danube River near Vienna. The Danube then continues through Austria and several other countries before reaching the Black Sea. This watershed supports diverse aquatic life, including fish species such as carp and pike, and provides important habitat for migratory birds.