Untere Feldaist Wastewater Treatment Plant, Pregarten, Austria

Untere Feldaist is a wastewater treatment plant located in Pregarten, Oberösterreich, Austria. It serves a population of approximately 8,725 people, classifying it as a medium-sized agglomeration under EU guidelines. The plant is situated in the Feldaist river catchment, contributing to regional water quality management. 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 aims to protect water bodies from eutrophication and pollution. The plant is expected to meet national standards aligned with EU requirements. The treated effluent is discharged into the Feldaist river, a tributary of the Danube basin. The Danube ultimately flows into the Black Sea, making the plant part of a large international watershed. Proper treatment helps maintain water quality in the Feldaist and downstream ecosystems, supporting aquatic life and recreational uses.

The plant discharges into the Feldaist river, which flows into the Danube River and eventually reaches the Black Sea. This watershed supports diverse aquatic habitats and is important for migratory fish species. The region's water quality is managed under the EU Water Framework Directive, aiming to achieve good ecological status in all water bodies.