Maszewo Wastewater Treatment Plant: Serving 148,165 PE in Maszewo, Poland

The Maszewo wastewater treatment plant is located in Maszewo, within the gmina Stara Biała, powiat płocki, województwo mazowieckie, Poland. It serves a population equivalent of 148,165, classifying it as a large agglomeration under EU regulations. The plant is situated inland, approximately 50 km from the coast, and its operations are subject to Polish and EU environmental standards. As a large agglomeration, the plant is expected to provide at least secondary treatment under the EU Urban Waste Water Treatment Directive (91/271/EEC). For sensitive areas, tertiary treatment may be required. The regulatory framework ensures compliance with discharge standards to protect water quality. The plant discharges treated wastewater into local water bodies that ultimately drain into the Vistula River basin, which flows into the Baltic Sea. The surrounding region includes agricultural and natural areas, making effective treatment crucial for preventing nutrient pollution and protecting downstream ecosystems.

The Maszewo plant discharges into the local watershed, which is part of the Vistula River basin. The Vistula flows northward into the Baltic Sea, a semi-enclosed sea sensitive to eutrophication from nutrient inputs. The region supports diverse aquatic life and agricultural activities, so effective wastewater treatment is essential to minimize phosphorus and nitrogen loads that can cause algal blooms and oxygen depletion in the Baltic.