Czosnow Wastewater Treatment Plant, Czosnów, Masovian Voivodeship, Poland

The Czosnow wastewater treatment plant is located in Czosnów, a village in the Nowy Dwór Mazowiecki County of the Masovian Voivodeship in central Poland. The facility serves a population of about 8,207 residents within the gmina, reflecting its role in managing domestic wastewater for a small agglomeration. As a Polish treatment plant serving fewer than 10,000 people, it falls under the national implementation of the EU Urban Waste Water Treatment Directive (91/271/EEC). For agglomerations of this size, the directive requires appropriate treatment, typically secondary treatment, to protect receiving waters. The plant's operational details are managed by local municipal authorities. The treated effluent is discharged into local watercourses that ultimately drain into the Vistula River basin, which flows northward into the Baltic Sea. The facility plays a key role in protecting the region's surface water quality and supporting the ecological health of the downstream aquatic environment.

The Czosnow plant discharges into the local watershed, which is part of the Vistula River basin. The Vistula flows through central Poland and empties into the Baltic Sea via the Gdańsk Bay. This region supports diverse aquatic life and is important for migratory fish species. Proper wastewater treatment helps maintain water quality in the river system and reduces nutrient loading to the Baltic Sea, which is sensitive to eutrophication.