Memmingen Wastewater Treatment Plant: Serving Unteropfingen and the Iller River Basin

The Memmingen wastewater treatment plant is located in Unteropfingen, a district of Kirchdorf an der Iller in Baden-Württemberg, Germany. It serves a population of over 107,000, classifying it as a large agglomeration under EU regulations. The plant is situated near the Iller River, a tributary of the Danube. As a large agglomeration, the plant is required to meet secondary treatment standards under the EU Urban Waste Water Treatment Directive (91/271/EEC). For plants serving more than 100,000 people, the directive also mandates nutrient removal in sensitive areas. The plant's design and operational practices align with these regulatory requirements to protect water quality. The treated effluent is discharged into the Iller River, which flows into the Danube and eventually reaches the Black Sea. This river system supports diverse aquatic life and is an important ecological corridor. The plant's operations help maintain the ecological health of the Iller and downstream waters.

The plant discharges into the Iller River, a tributary of the Danube, which flows into the Black Sea. The Iller River supports a variety of fish species and aquatic habitats. The Danube basin is a major European waterway with significant ecological importance, including migratory fish routes and floodplain ecosystems. The plant's nutrient removal helps prevent eutrophication in downstream waters.