Unteres Kremstal Wastewater Treatment Plant, Neuhofen an der Krems, Austria

Unteres Kremstal is a wastewater treatment plant located in Neuhofen an der Krems, in the state of Oberösterreich, Austria. It serves a population of about 12,891 people, classifying it as a medium-sized agglomeration under Austrian and EU regulations. As a plant of this scale in Austria, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations between 10,000 and 150,000 population equivalent. The plant's treatment process and capacity are managed to meet these standards, ensuring compliance with national and EU water quality objectives. The plant discharges treated effluent into the local watershed, which ultimately drains into the Danube River basin. The Krems River, a tributary of the Danube, receives the treated water, supporting aquatic life and contributing to the ecological health of the Danube ecosystem. The region's water bodies are important for biodiversity and recreational use.

The plant's treated effluent flows into the Krems River, a tributary of the Danube River, which eventually reaches the Black Sea. This watershed supports diverse aquatic species and is an important migratory corridor for fish. The Danube basin is ecologically sensitive, and the plant's operations help protect water quality downstream.