Gminna Oczyszczalnia Sciekow w Guzowie - Secondary Wastewater Treatment Plant in Guzów, Poland

Gminna Oczyszczalnia Sciekow w Guzowie is a municipal wastewater treatment plant located in Guzów, in the Mazowieckie Voivodeship of Poland. The plant serves a small population of 589 residents, reflecting its role in a rural community within the Gmina Wiskitki area. As a secondary treatment facility, the plant provides biological treatment to remove organic matter and suspended solids. With a designed capacity of 16,600 m³/day, the plant operates well below its potential, treating an average of 83.98 m³/day. Under Polish regulations implementing the EU Urban Waste Water Treatment Directive, small agglomerations like this are required to provide appropriate treatment to protect local water quality. The treated effluent is discharged into the local watershed, which ultimately drains into the Bzura River, a tributary of the Vistula River. The Vistula flows northward into the Baltic Sea, making this plant part of a larger network of facilities safeguarding the Baltic Sea ecosystem from nutrient pollution.

The plant discharges into the Bzura River basin, which flows into the Vistula River and eventually the Baltic Sea. The Baltic Sea is a semi-enclosed sea sensitive to eutrophication from nutrient inputs. The plant's secondary treatment helps reduce organic and nutrient loads, supporting the health of downstream aquatic ecosystems and contributing to regional water quality goals.