Dzierżoniów Wastewater Treatment Plant | Dzierżoniów, Poland

The Dzierżoniów wastewater treatment plant is located in the town of Dzierżoniów, within the Lower Silesian Voivodeship in southwestern Poland. It serves a population of approximately 28,727 residents, classifying it as a medium-sized agglomeration under EU classification. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), agglomerations of this scale are required to provide secondary treatment (biological treatment) as a minimum. For plants discharging to sensitive areas, more stringent treatment may be required. The regulatory framework ensures compliance with national and EU standards. The treated effluent is discharged into local watercourses that eventually drain into the Oder River basin, which flows northward to the Baltic Sea. The plant plays a key role in protecting the region's water quality and supporting the ecological health of downstream aquatic environments.

The plant discharges into the local watershed, which is part of the Oder River basin. The Oder River flows through Poland and Germany before reaching the Baltic Sea. This region supports diverse aquatic life and is an important ecological corridor. The treatment plant helps reduce nutrient and pollutant loads, protecting downstream water quality and the sensitive coastal ecosystem of the Baltic Sea.