Stara Wies Wastewater Treatment Plant, Stara Wieś-Kolonia | Poland

The Stara Wies wastewater treatment plant is located in Stara Wieś-Kolonia, within the gmina Łęczna of powiat łęczyński, województwo lubelskie, Poland. It serves a population equivalent of 18,477, classifying it as a medium-sized agglomeration under Polish and EU regulations. The plant is situated inland, away from coastal areas, and its operations are subject to national and European environmental standards. As a facility serving a population of approximately 18,500, the plant is expected to comply with the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size. The directive also mandates more advanced treatment if the receiving waters are designated as sensitive areas. The regulatory framework ensures appropriate treatment levels are maintained. The treated effluent from the plant is discharged into local water bodies within the Wieprz River basin, which ultimately flows into the Vistula River and then into the Baltic Sea. The plant plays a crucial role in protecting the local watershed from nutrient pollution and safeguarding downstream aquatic ecosystems, including the sensitive Baltic Sea environment.

The Stara Wies plant discharges into the Wieprz River catchment, a tributary of the Vistula River, which drains into the Baltic Sea. The Baltic Sea is a semi-enclosed sea with limited water exchange, making it highly sensitive to nutrient inputs that cause eutrophication. The plant's operations contribute to reducing nitrogen and phosphorus loads, helping to mitigate algal blooms and oxygen depletion in downstream waters. The local watershed supports diverse aquatic life and is part of a region with significant agricultural activity, making effective wastewater treatment essential for maintaining water quality.