MOS w Żywcu Wastewater Treatment Plant | Żywiec, Silesian Voivodeship, Poland

MOS w Żywcu is a municipal wastewater treatment plant located in Żywiec, in the Silesian Voivodeship of southern Poland. The plant serves a population of approximately 107,000, classifying it as a large agglomeration under EU regulations. Its location in the Beskid Mountains region places it within a sensitive mountainous watershed. As a large agglomeration in Poland, the plant is required to meet tertiary treatment standards under the EU Urban Waste Water Treatment Directive (91/271/EEC) for sensitive areas. The plant's treatment process and capacity are managed to comply with Polish national regulations that transpose the directive, ensuring effective nutrient removal to protect downstream waters. The treated effluent from MOS w Żywcu is discharged into the Soła River, a tributary of the Vistula River, which ultimately flows into the Baltic Sea. The plant plays a critical role in protecting the Soła River's water quality, which supports diverse aquatic life and is used for recreation and drinking water supply downstream.

The plant discharges into the Soła River, a major tributary of the Vistula River, which flows northward to the Baltic Sea. The Soła River valley is ecologically sensitive, supporting diverse aquatic habitats and migratory fish species. The plant's advanced treatment helps maintain water quality in this mountainous region, which is important for both local biodiversity and downstream communities.