Riesburg Pflaumloch Wastewater Treatment Plant, Pflaumloch, Germany

Riesburg Pflaumloch is a former wastewater treatment plant located in Pflaumloch, a district of Riesbürg in the Ostalbkreis district of Baden-Württemberg, Germany. The plant served a population of 1,800 and is now closed. It was designed with a capacity of 2,500 cubic meters per day and had an average discharge volume of 455.54 cubic meters per day. The plant provided secondary treatment, which is the standard required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. The directive mandates secondary treatment for populations between 2,000 and 10,000 in freshwater areas, and Germany implements this through its national water legislation. The plant's discharge likely entered a local watercourse within the Danube basin, as the region drains into the Danube River via the Egau or other tributaries. The Danube ultimately flows into the Black Sea, making this plant part of a transboundary river system. The surrounding area is rural and agricultural, with the plant's operations having contributed to protecting local water quality.

The plant discharged into a local tributary of the Danube River, which flows through Baden-Württemberg before entering the Black Sea. The Danube basin supports diverse aquatic life and is an important ecological corridor in Europe. The plant's secondary treatment helped reduce organic pollution and protect downstream water quality in this sensitive river system.