Janów Podlaski Wastewater Treatment Plant, Stary Pawłów, Poland

The Janów Podlaski wastewater treatment plant is located in Stary Pawłów, within the gmina of Janów Podlaski in the Lublin Voivodeship of eastern Poland. This facility serves a population of approximately 2,940 residents, reflecting its role as a small-scale municipal treatment plant in a rural area. The plant provides secondary treatment, which is the standard biological treatment required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations with a population equivalent between 2,000 and 10,000. With a designed capacity of 3,341 cubic meters per day and an actual discharge volume of 419.20 cubic meters per day, the plant operates well within its capacity. The treated effluent is discharged into local waterways that ultimately drain into the Bug River, a major tributary of the Narew River, which flows into the Vistula and then to the Baltic Sea. The plant's operation helps protect the Bug River basin from nutrient pollution and supports the ecological health of this transboundary river system.

The plant discharges into the Bug River basin, which flows through eastern Poland and forms part of the border with Belarus and Ukraine. The Bug River is a significant tributary of the Narew River, which joins the Vistula and empties into the Baltic Sea. This watershed supports diverse aquatic life and is an important migratory corridor for fish. The secondary treatment provided by the plant reduces organic load and nutrients, helping to prevent eutrophication in downstream waters.