TMB Wastewater Treatment Plant, Pasternik, Poland

TMB is a wastewater treatment plant located in Pasternik, within the małopolskie province of Poland. It serves a small population of 267 residents, reflecting its role in a rural or small community setting. The plant is situated in the Oświęcim county, an area known for its industrial history and proximity to the Vistula River basin. The plant provides secondary treatment, which is the standard biological treatment stage required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. The designed capacity is 125 m³/day, and the current discharge volume is 38.07 m³/day, indicating that the plant operates well below its capacity. This suggests adequate headroom for future growth or seasonal variations. The treated effluent is discharged into the local watershed, which ultimately drains into the Vistula River and then into the Baltic Sea. The plant's operation helps protect downstream water quality, supporting aquatic life and reducing nutrient loads in the sensitive Baltic Sea ecosystem. As a small inland facility, its environmental impact is localized but contributes to regional water quality goals.

TMB discharges treated wastewater into the local catchment, which flows into the Vistula River basin. The Vistula is Poland's longest river and drains into the Baltic Sea, a semi-enclosed sea vulnerable to eutrophication from nutrient pollution. The plant's secondary treatment reduces organic matter and suspended solids, helping to maintain the ecological health of downstream water bodies and supporting biodiversity in the region.