KA Polle_Brevorde - Advanced Wastewater Treatment Plant in Polle, Niedersachsen

KA Polle_Brevorde (plant ID 2554062001) is an advanced wastewater treatment facility located in Polle, a municipality in the Samtgemeinde Bodenwerder-Polle, Landkreis Holzminden, Niedersachsen, Germany. The plant serves a population of about 3,963 and has a designed capacity of 8,000 m³/day, with a discharge volume of 979.34 m³/day. As an advanced treatment plant, it goes beyond secondary treatment to remove nutrients such as nitrogen and phosphorus, meeting stringent standards under the EU Urban Waste Water Treatment Directive (91/271/EEC). For agglomerations of this size (under 10,000 population equivalent), the directive requires appropriate treatment, and Germany's national implementation often mandates advanced treatment in sensitive areas. The plant's treated effluent is discharged into local watercourses that ultimately drain into the Weser River basin. The Weser flows northward through Niedersachsen to the North Sea, supporting diverse aquatic life and serving as an important ecological corridor. The advanced treatment helps protect downstream water quality and the sensitive North Sea ecosystem from eutrophication.

The plant discharges into the Weser River basin, which flows through Niedersachsen to the North Sea. The Weser and its tributaries support diverse aquatic habitats and are important for migratory fish species. Advanced treatment at this plant reduces nutrient loads, helping to prevent algal blooms and maintain ecological balance in the downstream estuary and coastal waters.