Radymno Wastewater Treatment Plant, Podkarpackie, Poland

The Radymno wastewater treatment plant is located in the town of Radymno, in the Podkarpackie region of southeastern Poland. It serves a population of 2,528, 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 for the local community. The plant provides secondary treatment, which is the standard biological treatment required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. The directive mandates secondary treatment for all discharges from agglomerations with a population equivalent (PE) between 2,000 and 10,000, which Radymno falls within. The plant has a designed capacity of 6,416 m³/day, with an average daily discharge of 360.45 m³/day, indicating significant spare capacity. The treated effluent is discharged into the local water system, which ultimately drains into the San River, a tributary of the Vistula River. The Vistula flows northward into the Baltic Sea. The plant's operations help protect the water quality of the San and Vistula rivers, supporting aquatic life and downstream ecosystems.

The Radymno plant discharges into the San River basin, which flows into the Vistula River and eventually reaches the Baltic Sea. This watershed supports diverse aquatic habitats and is important for migratory fish species. The secondary treatment provided by the plant reduces organic pollutants and suspended solids, helping to maintain the ecological health of the river system and prevent eutrophication in the Baltic Sea.