Overview
Zarszyn wastewater treatment plant serves 2,110 people in Podkarpackie, Poland. It provides secondary treatment and discharges 300.85 m³/day of treated effluent.
The Zarszyn wastewater treatment plant is located in the village of Zarszyn, within the Sanok County of Podkarpackie Voivodeship, southeastern Poland. It serves a population of 2,110, classifying it as a small agglomeration under Polish and EU regulations. The plant provides secondary biological treatment, which is the minimum standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for discharges into freshwater from agglomerations of this size. The designed capacity is 9,230 m³/day, with an actual discharge volume of 300.85 m³/day, indicating significant spare capacity. The treated effluent is discharged into a local watercourse, which eventually drains into the San River, a tributary of the Vistula River. The Vistula flows into the Baltic Sea, making this plant part of the broader Baltic Sea catchment. Proper treatment helps protect downstream aquatic ecosystems and supports water quality goals for the Baltic Sea region.
Environmental context
The plant discharges into a local stream that flows into the San River, a major right-bank tributary of the Vistula. The Vistula River basin drains into the Baltic Sea, a semi-enclosed sea sensitive to nutrient pollution. The region is characterized by forested hills and agricultural land, and the receiving waters support diverse aquatic life, including fish species such as salmon and trout in the upper San. Effective secondary treatment reduces organic load and helps prevent eutrophication in downstream waters.
Frequently asked questions
The Zarszyn WWTP is located in the village of Zarszyn, in Sanok County, Podkarpackie Voivodeship, southeastern Poland.
The plant serves a population of 2,110, making it a small agglomeration under EU classification.
The plant discharges treated effluent into a local watercourse that flows into the San River, a tributary of the Vistula River, which ultimately reaches the Baltic Sea.
The plant provides secondary biological treatment, meeting the minimum requirement under the EU Urban Waste Water Treatment Directive for small agglomerations discharging into freshwater.
As a Polish plant, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment for agglomerations above 2,000 population equivalent. The plant also complies with Polish water law and environmental permits.
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