Overview
Miejska Oczyszczalnia Sciekow w Lezajsku serves approximately 58,000 residents in Leżajsk, Poland. The plant operates under EU regulations for wastewater treatment in the Podkarpackie region.
Miejska Oczyszczalnia Sciekow w Lezajsku is a municipal wastewater treatment plant located in Leżajsk, Poland, within the Podkarpackie Voivodeship. It serves a population of approximately 57,817, classifying it as a medium-sized agglomeration under EU standards. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), plants serving populations between 10,000 and 100,000 are required to provide secondary treatment, with tertiary treatment mandated if the receiving waters are designated as sensitive areas. The plant's treatment processes align with these regulatory requirements to ensure compliance and environmental protection. The treated effluent is discharged into local waterways that ultimately drain into the San River, a tributary of the Vistula River, which flows into the Baltic Sea. This downstream connection highlights the plant's role in protecting the Vistula basin and the Baltic Sea from nutrient pollution and other contaminants.
Environmental context
The plant discharges into the San River basin, which flows into the Vistula River and eventually reaches the Baltic Sea. The Baltic Sea is a semi-enclosed sea sensitive to eutrophication from nutrient inputs. The plant's operations help reduce the load of organic matter and nutrients entering this ecologically important water body, supporting aquatic life and water quality in the region.
Frequently asked questions
The plant is located in Leżajsk, in the Podkarpackie Voivodeship of southeastern Poland.
The plant serves approximately 57,817 residents, classifying it as a medium-sized agglomeration under EU definitions.
Treated wastewater is discharged into local waterways that flow into the San River, a tributary of the Vistula River, which ultimately reaches the Baltic Sea.
As a Polish plant serving over 10,000 people, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment and, if needed, tertiary treatment for sensitive areas.
Plants of this scale in Poland are required to provide at least secondary treatment under EU law. Many also incorporate nutrient removal to protect the Baltic Sea from eutrophication.
Nearby plants