Gminna oczyszczalnia sciekow w Biszczy - Secondary Wastewater Treatment in Suszka, Poland

Gminna oczyszczalnia sciekow w Biszczy is a municipal wastewater treatment plant located in Suszka, within the gmina of Biszcza in województwo lubelskie, Poland. The plant serves a small population of 644 residents, reflecting its role in a rural community. It operates as a secondary treatment facility, which is the standard level required under Polish regulations for agglomerations of this size. The plant has a designed capacity of 495.00 m³/day and currently discharges 91.82 m³/day of treated wastewater. As a secondary treatment plant, it employs biological processes to reduce organic matter and suspended solids before discharge. Polish wastewater treatment plants are regulated under national law transposing the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment for all agglomerations above 2,000 population equivalent, though smaller plants like this one also typically meet secondary standards. The treated effluent is discharged into local surface waters, which ultimately drain into the San River basin, a tributary of the Vistula River. The Vistula flows into the Baltic Sea, making this plant part of a larger watershed that supports diverse aquatic ecosystems. The surrounding region is characterized by agricultural land and forests, and the plant's operations help protect local streams and groundwater quality.

The plant discharges into local watercourses that feed into the San River, a major tributary of the Vistula River. The Vistula River basin is the largest in Poland and drains into the Baltic Sea. This watershed supports diverse aquatic life, including fish species such as salmon and trout in the upper reaches. The plant's secondary treatment helps reduce nutrient loads that could otherwise contribute to eutrophication in downstream water bodies, including the Baltic Sea, which is sensitive to nitrogen and phosphorus pollution.