Brzostowo Wastewater Treatment Plant, Miasteczko Krajeńskie, Poland

Brzostowo is a wastewater treatment plant located in Miasteczko Krajeńskie, within the Wielkopolskie Voivodeship of Poland. It serves a population of 1,108 people, classifying it as a small agglomeration under Polish and EU regulations. The plant is situated inland, away from coastal areas, and operates as part of the municipal infrastructure for the local community. The plant provides secondary treatment, which is the standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. It has a designed capacity of 4,400 m³/day and currently discharges 157.98 m³/day of treated wastewater. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids. The treated effluent is discharged into a local water body, which ultimately drains into the Noteć River basin and then into the Warta River, a major tributary of the Oder River. The Oder flows into the Baltic Sea, making this plant part of a larger transboundary watershed. The plant's operation helps protect downstream aquatic ecosystems and supports water quality in the region.

The plant discharges into a local watercourse that feeds into the Noteć River, a tributary of the Warta River, which in turn flows into the Oder River and eventually the Baltic Sea. This watershed supports diverse aquatic life and is important for regional biodiversity. The secondary treatment provided helps reduce nutrient loads, mitigating eutrophication risks in downstream water bodies.