SEPOPOL Wastewater Treatment Plant, Podlechy, Poland

SEPOPOL is a wastewater treatment plant located in Podlechy, within the gmina Korsze of the warmińsko-mazurskie voivodeship in northern Poland. The facility provides secondary treatment for a population of approximately 1,465, classifying it as a small agglomeration under Polish and EU regulations. Its designed capacity is 3,800 cubic meters per day, with a current discharge volume of 208.89 cubic meters per day, indicating significant reserve capacity. As a secondary treatment plant, SEPOPOL meets the minimum requirements of the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. The directive mandates secondary treatment for all discharges from agglomerations with a population equivalent above 2,000, but smaller plants like this one are still expected to provide appropriate treatment to protect local water quality. The plant's operational context is shaped by Poland's implementation of the directive, which requires compliance monitoring and permits issued by regional water authorities. The treated effluent from SEPOPOL is discharged into local watercourses that ultimately drain into the Baltic Sea via the Pregolya River basin. The region's watershed supports diverse aquatic life and contributes to the ecological health of the Vistula Lagoon and the Baltic Sea. The plant plays a key role in protecting these downstream environments from nutrient pollution and organic loads, particularly given the agricultural character of the surrounding area.

SEPOPOL discharges treated wastewater into local streams that flow into the Łyna River, a tributary of the Pregolya River, which eventually reaches the Vistula Lagoon and the Baltic Sea. This watershed is ecologically sensitive, supporting diverse fish populations and migratory bird species. The plant's secondary treatment helps reduce nutrient loads, mitigating eutrophication risks in the downstream lagoon and coastal waters.