Wawolnica Wastewater Treatment Plant, Wąwolnica, Poland

The Wawolnica wastewater treatment plant is located in the town of Wąwolnica, in województwo lubelskie, eastern Poland. The facility serves a population of approximately 1,132 residents, making it a small-scale municipal treatment plant. It operates under Polish regulations that transpose the EU Urban Waste Water Treatment Directive (91/271/EEC). The plant provides secondary treatment, which is the minimum standard required under the EU directive for agglomerations of this size. The designed capacity is 2,500 m³/day, and the current discharge volume is 161.41 m³/day, indicating significant available capacity. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids. The treated wastewater is discharged into a local watercourse that ultimately drains into the Vistula River basin, which flows northward to the Baltic Sea. The plant plays a key role in protecting local water quality and the downstream aquatic environment in the region.

The plant discharges into a tributary of the Vistula River, Poland's longest river, which flows into the Baltic Sea. The local watershed supports diverse aquatic life and is part of an important ecological corridor. The secondary treatment helps reduce nutrient loads and organic pollution, contributing to the health of downstream water bodies.