Zelów Wastewater Treatment Plant - Łódź Voivodeship, Poland

The Zelów wastewater treatment plant is located in the town of Zelów, within the Łódź Voivodeship of central Poland. It serves a population of approximately 3,365 residents, classifying it as a small agglomeration under Polish and EU regulations. The plant is situated inland, away from coastal areas, and its operations are part of the municipal infrastructure managed by local authorities. As a secondary treatment facility, the plant meets the minimum requirements set by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids. The plant's designed capacity of 8,710 m³/day indicates it has room to accommodate future growth, while current discharge volume is 479.80 m³/day. The treated effluent is discharged into local watercourses that eventually drain into the Warta River basin, a major tributary of the Oder River, which flows into the Baltic Sea. The plant plays a key role in protecting the region's surface waters from pollution, supporting aquatic life and downstream ecosystems in the Oder basin.

The plant discharges into the Warta River catchment, part of the Oder River basin that ultimately reaches the Baltic Sea. This inland watershed supports diverse aquatic habitats and is important for migratory fish species. The region's agricultural and industrial activities make effective wastewater treatment essential for maintaining water quality in the river system.