Polska Cerekiew typu Ecolo Chief Wastewater Treatment Plant, Krowiarki, Silesian Voivodeship

Polska Cerekiew typu Ecolo Chief is a wastewater treatment plant located in Krowiarki, within the gmina Pietrowice Wielkie in the Silesian Voivodeship of southern Poland. The plant serves a small population of 1,026 residents, reflecting its role in a rural community. It operates with a designed capacity of 1,470 m³/day and currently discharges 146.29 m³/day of treated effluent. The plant provides secondary treatment, which is the standard biological treatment required under Polish regulations aligned with the EU Urban Waste Water Treatment Directive (91/271/EEC). For small agglomerations under 2,000 population equivalent, secondary treatment is typically sufficient to protect receiving waters. The plant's capacity utilization is low, indicating it is operating well below its design capacity. The treated effluent is discharged into local watercourses that drain into the Oder River basin, ultimately reaching the Baltic Sea. The plant's operation helps protect the region's surface water quality, supporting aquatic life and downstream ecosystems. Its inland location reduces direct marine impact, but careful management remains important for the local watershed.

The plant discharges into small streams within the Oder River basin, which flows northward through Poland and into the Baltic Sea. The local watershed supports diverse aquatic habitats and is part of a region with agricultural land use. Proper treatment helps prevent nutrient loading and maintains water quality for downstream communities and ecosystems.