Lembach Wastewater Treatment Plant, Lembach im Mühlkreis, Upper Austria

Lembach wastewater treatment plant is located in Lembach im Mühlkreis, a town in the Rohrbach district of Upper Austria. The plant serves a population of approximately 1,596 and operates with advanced treatment technology, ensuring high-quality effluent before discharge. As a small agglomeration in Austria, the plant is subject to the EU Urban Waste Water Treatment Directive 91/271/EEC, which requires appropriate treatment for discharges into freshwater. With advanced treatment, the plant exceeds the minimum secondary treatment standard, likely addressing nutrient removal to protect sensitive receiving waters. The plant discharges treated wastewater into local watercourses that drain into the Danube River basin, ultimately reaching the Black Sea. The surrounding region is characterized by agricultural and forested landscapes, and the plant plays a key role in maintaining water quality in the local streams and the broader Danube ecosystem.

The plant discharges into small streams that flow into the Danube River basin, which drains into the Black Sea. The region's water bodies support diverse aquatic life and are important for agriculture and recreation. Advanced treatment helps minimize nutrient loading, protecting downstream ecosystems from eutrophication.