Oczyszczalnia Sciekow w Suminie - Secondary Wastewater Treatment Plant in Sumina, Silesia

Oczyszczalnia Sciekow w Suminie is a municipal wastewater treatment plant located in Sumina, within the Silesian Voivodeship of southern Poland. The facility serves a population of approximately 2,800 residents, classifying it as a small agglomeration under Polish and EU regulations. Its location in the industrial and mining region of Silesia places it within a densely populated and historically impacted watershed. The plant provides secondary treatment, which is the minimum standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids. The plant's designed capacity is 4,020 cubic meters per day, with an average daily discharge of 399.24 cubic meters, indicating ample reserve capacity for future growth or seasonal peaks. Treated effluent from the plant is discharged into local streams that ultimately flow into the Oder River basin, which drains northward to the Baltic Sea. The Oder basin supports diverse aquatic ecosystems and is an important migratory corridor for fish species. The plant's operation helps protect downstream water quality in a region affected by historical industrial pollution and mining activities.

The plant discharges into small watercourses within the Oder River basin, which flows through Poland and Germany before reaching the Baltic Sea. The Oder basin supports diverse aquatic life, including fish species such as pike and perch, and is an important ecological corridor. The region's industrial and mining legacy places additional pressure on water quality, making the plant's secondary treatment crucial for mitigating nutrient and organic pollution.