Marciszow Wastewater Treatment Plant, Ciechanowice | Lower Silesia, Poland

The Marciszow wastewater treatment plant is located in Ciechanowice, within the gmina Marciszów of the Lower Silesian Voivodeship in Poland. It serves a population of approximately 798 residents, making it a small-scale municipal facility in this rural region of southwestern Poland. As a secondary treatment plant, it provides biological treatment to remove organic matter and suspended solids. The plant has a designed capacity of 3,700 cubic meters per day, though current discharge volume is 113.78 cubic meters per day. Under Polish regulations implementing the EU Urban Waste Water Treatment Directive, small agglomerations like this are required to provide appropriate treatment to protect receiving waters. The plant discharges treated wastewater into local watercourses that eventually drain into the Oder River basin, which flows northward to the Baltic Sea. Its operation helps maintain water quality in the region's streams and supports the ecological health of the broader Oder catchment area.

The plant's treated effluent enters local streams within the Oder River basin, which flows through Poland and Germany before reaching the Baltic Sea. This region features diverse aquatic habitats that support species such as brown trout and European eel. The secondary treatment provided helps reduce nutrient loading and organic pollution, protecting downstream ecosystems from eutrophication and maintaining biodiversity in the sensitive Baltic Sea coastal zone.