Wysoka Strzyzowska Wastewater Treatment Plant, Podkarpackie, Poland

Wysoka Strzyzowska is a wastewater treatment plant located in Wysoka Strzyżowska, within the gmina Strzyżów in the Podkarpackie Voivodeship of southeastern Poland. The plant served the local community as part of the region's municipal wastewater infrastructure. The plant provided secondary treatment, which is the standard biological treatment required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this scale. Its designed capacity of 2260 m³/day indicates it was sized for a small to medium population. The plant is now closed, and its operational history reflects the evolving wastewater management needs of the area. The treated effluent from this facility would have discharged into local watercourses that drain into the Wisłok River, a tributary of the San River, which ultimately flows into the Vistula River and then into the Baltic Sea. The plant's operation contributed to protecting the local watershed and downstream aquatic ecosystems from untreated sewage.

The plant is located inland in the Podkarpackie region, within the catchment of the Wisłok River. The Wisłok flows into the San River, a major tributary of the Vistula, which drains into the Baltic Sea. The local watershed supports diverse aquatic life and is part of a broader ecological network. The plant's secondary treatment helped reduce organic pollution and nutrient loads, safeguarding water quality in downstream rivers and the Baltic Sea.