Urszulin Wastewater Treatment Plant, Majdan Zahorodyński, Poland

Urszulin is a wastewater treatment plant located in Majdan Zahorodyński, a village in the Lublin Voivodeship of eastern Poland. The plant serves a small population of 808 residents, reflecting its role in a rural community. It operates under Polish regulations which transpose the EU Urban Waste Water Treatment Directive (91/271/EEC). The plant provides secondary treatment, which is the standard required by the EU directive for discharges into freshwater from agglomerations of this size. With a designed capacity of 3,670 m³/day and an actual discharge volume of 115.21 m³/day, the plant operates well below its capacity, indicating potential for future growth or seasonal variations. The treated effluent is discharged into local watercourses that eventually drain into the Wieprz River, a tributary of the Vistula River, which flows into the Baltic Sea. The plant plays a key role in protecting the local watershed and downstream aquatic ecosystems from untreated sewage.

The plant discharges into small streams that feed into the Wieprz River, a major tributary of the Vistula. The Vistula flows northward through Poland into the Baltic Sea. The local watershed supports diverse aquatic life and is part of a region with agricultural land use, making nutrient removal from wastewater important to prevent eutrophication in downstream waters.