Kleszczyna Wastewater Treatment Plant, Buntowo, Poland

Kleszczyna is a wastewater treatment plant located near Buntowo in the Wielkopolskie region of Poland. It serves a small population of 401 residents, reflecting its role as a local facility for a rural community. The plant is situated in the powiat złotowski area, within the broader administrative region of województwo wielkopolskie. 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. With a designed capacity of 2770 m³/day and an actual discharge volume of 57.18 m³/day, the facility operates well below its capacity, indicating it is sized for future growth or seasonal peaks. The plant's treatment process aligns with EU regulations that mandate secondary treatment for all discharges from agglomerations above 2000 population equivalent, though smaller plants like this one are also expected to meet appropriate standards. The treated effluent from Kleszczyna is discharged into a local watercourse, which eventually drains into the Baltic Sea via the Vistula or Oder river basins. The plant's inland location, over 50 km from the coast, reduces direct marine impact, but its discharge contributes to the overall water quality in the region's rivers and lakes. The surrounding area is characterized by agricultural land and small settlements, making the plant important for protecting local groundwater and surface water from nutrient pollution.

The plant discharges into a small watercourse that is part of the Noteć River basin, which flows into the Warta River and ultimately the Oder River, reaching the Baltic Sea. The region's watershed supports diverse aquatic life and is used for agriculture and recreation. Effective treatment is crucial to prevent eutrophication in downstream lakes and the Baltic Sea, which is sensitive to nutrient loads.