Sokolow Podlaski Wastewater Treatment Plant | Sokołów Podlaski, Poland

The Sokolow Podlaski wastewater treatment plant is located in Sokołów Podlaski, a town in the Masovian Voivodeship of eastern Poland. The facility serves a population equivalent of 33,562, classifying it as a medium-sized agglomeration under EU regulations. The plant is situated inland, approximately 50 km from the nearest coast, and discharges into local watercourses that ultimately drain into the Baltic Sea. As a Polish facility, the plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size. The directive also mandates more stringent treatment if the receiving waters are designated as sensitive areas. Poland has implemented the directive through national regulations, and the plant is subject to permits issued by the Regional Water Management Board (RZGW) in Warsaw. The plant's treated effluent is discharged into the local river system, which is part of the Bug River basin. The Bug River flows into the Narew, then the Vistula, and finally into the Baltic Sea. This watershed supports diverse aquatic life and is an important ecological corridor in the region. The plant plays a key role in protecting water quality in this sensitive river basin.

The plant discharges into the Bug River basin, a tributary of the Narew and Vistula rivers, which flow into the Baltic Sea. This watershed supports diverse aquatic ecosystems and is an important migratory corridor for fish. The region's agricultural landscape means nutrient removal is critical to prevent eutrophication in downstream waters.