MBR Swidnik Wastewater Treatment Plant, Owieczka, Poland

MBR Swidnik is a wastewater treatment plant located in Owieczka, within the małopolskie province of Poland. It serves a small population of approximately 1,108 people, reflecting its role as a local facility for a rural community. The plant operates under Polish regulations, which align with the EU Urban Waste Water Treatment Directive (91/271/EEC), requiring secondary treatment for agglomerations of this size. The plant provides secondary treatment, which is the standard level for small communities under EU directives. With a designed capacity of 3,834 m³/day and a current discharge volume of 157.98 m³/day, the facility operates well below its capacity, indicating potential for future growth or seasonal variability. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids. The treated effluent is discharged into local water bodies, likely tributaries of the Dunajec River, which flows into the Vistula River and eventually reaches the Baltic Sea. The plant plays a key role in protecting the local watershed from untreated sewage, supporting water quality in the region's rivers and downstream ecosystems.

The plant discharges into local streams that feed the Dunajec River, a major tributary of the Vistula River. The Vistula flows northward through Poland into the Baltic Sea, making this plant part of a large transboundary basin. The surrounding area is characterized by rural and agricultural land use, with the Carpathian foothills nearby, which can contribute to nutrient runoff. The plant's secondary treatment helps reduce organic pollution and nutrient loads, protecting downstream aquatic habitats and the sensitive Baltic Sea ecosystem from eutrophication.