Aichwald Aichschiess Wastewater Treatment Plant, Krummhardt, Germany

Aichwald Aichschiess is a wastewater treatment plant located in Krummhardt, a district of Aichwald in the Esslingen district of Baden-Württemberg, Germany. The plant serves a population of about 6,050 people, classifying it as a small to medium agglomeration under EU regulations. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), plants serving between 2,000 and 10,000 population equivalents are required to provide secondary treatment (biological treatment) as a minimum. The plant operates within this regulatory framework, ensuring compliance with German water quality standards. The treated effluent is discharged into local watercourses that drain into the Neckar River basin, which ultimately flows into the Rhine River and then the North Sea. The plant plays a key role in protecting the local watershed and downstream aquatic ecosystems from nutrient pollution.

The plant discharges into small streams that feed into the Neckar River, a major tributary of the Rhine. The Neckar-Rhine system supports diverse aquatic life and is an important migratory corridor for fish. The region's mixed urban and agricultural land use means nutrient management is critical to prevent eutrophication in downstream waters.