Strzyzow Wastewater Treatment Plant, Strzyżów, Podkarpackie, Poland

The Strzyzow wastewater treatment plant is located in Strzyżów, a town in the Podkarpackie region of southeastern Poland. The facility serves a population of about 11,147 residents, making it a medium-sized agglomeration under Polish and EU classifications. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), plants serving populations between 10,000 and 100,000 are required to provide secondary treatment as a minimum. In sensitive areas, more stringent treatment may be mandated. It operates within this regulatory framework. The treated effluent is discharged into local watercourses that eventually drain into the Wisłok River, a tributary of the San River, which flows into the Vistula River and ultimately reaches the Baltic Sea. The plant plays a key role in protecting the local watershed and downstream aquatic ecosystems from pollution.

The Strzyzow plant discharges into the Wisłok River basin, which flows through the Carpathian foothills. The Wisłok joins the San River, a major tributary of the Vistula, which empties into the Baltic Sea. The region supports diverse aquatic life, including fish species such as brown trout and grayling, and the river corridor serves as an important ecological link in southeastern Poland.