Uzdowo Wastewater Treatment Plant, Żabiny, Poland

The Uzdowo wastewater treatment plant is located in Żabiny, within the warmińsko-mazurskie region of Poland. It serves a population of 1,336 and is part of the municipal wastewater infrastructure for the area. As a secondary treatment facility, the plant meets the standard required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. The directive mandates secondary treatment for populations between 2,000 and 10,000, and Poland has implemented this through national regulations. The plant's designed capacity of 4,600 m³/day indicates it can handle peak flows. The treated effluent is discharged into local watercourses that drain towards the Vistula River basin, ultimately reaching the Baltic Sea. The region's aquatic ecosystems benefit from the plant's treatment, which reduces organic pollutants and nutrients, helping to protect downstream water quality and biodiversity.

The plant discharges into local streams that flow into the Drwęca River, a tributary of the Vistula. The Vistula carries the water to the Baltic Sea, a semi-enclosed sea sensitive to nutrient pollution. The warmińsko-mazurskie region features numerous lakes and wetlands, and the plant's secondary treatment helps reduce eutrophication risks in these sensitive freshwater ecosystems.