Grossenlupnitz Wastewater Treatment Plant - Großenlupnitz, Thüringen, Germany

Grossenlupnitz wastewater treatment plant is located in the town of Großenlupnitz, part of the Hörselberg-Hainich municipality in Thüringen, Germany. The plant serves a population of approximately 3,200 residents, making it a small-scale municipal facility. It operates under Germany's implementation of the EU Urban Waste Water Treatment Directive (91/271/EEC), which sets standards for wastewater collection and treatment. The plant provides secondary treatment, a biological process that removes organic matter and suspended solids. With a designed capacity of 3,200 cubic meters per day and an average discharge volume of 568 cubic meters per day, the facility operates well within its capacity. This treatment level meets the EU directive's requirements for agglomerations of this size, ensuring compliance with national water quality standards. The treated effluent is discharged into local streams that flow into the Hörsel River, a tributary of the Werra River, which ultimately drains into the Weser River and the North Sea. The plant plays a key role in protecting the Hörsel-Werra watershed from nutrient pollution, supporting aquatic life and downstream ecosystems in the Weser basin.

The plant discharges into the Hörsel River, which flows into the Werra River, a major tributary of the Weser River system. The Weser drains into the North Sea, making the plant part of a transboundary basin. The region supports diverse aquatic habitats, including fish spawning grounds and migratory corridors for species such as salmon and eel. Secondary treatment reduces organic load and suspended solids, helping to maintain water quality in this ecologically sensitive watershed.