KOLO, Koło | Poland Wastewater

Overview

KOLO wastewater treatment plant serves the city of Koło in Wielkopolskie, Poland, with a population equivalent of 35,544. It operates under the EU Urban Waste Water Treatment Directive.

The KOLO wastewater treatment plant is located in Koło, a town in the Wielkopolskie province of Poland. It serves a population of approximately 35,544, classifying it as a medium-sized agglomeration under EU regulations. The plant is situated near the Warta River, a major tributary of the Oder. As a Polish facility, the plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size. For discharges to sensitive areas, tertiary treatment may be mandated. It is expected to meet the directive's standards for biological treatment. The treated effluent is discharged into the Warta River, which flows northward to the Oder River and eventually into the Baltic Sea. This water body supports diverse aquatic life and is an important ecological corridor. The plant plays a key role in protecting local water quality and downstream ecosystems.

Environmental context

The KOLO plant discharges into the Warta River, a major right-bank tributary of the Oder River. The Oder flows into the Baltic Sea via the Szczecin Lagoon. The Warta basin supports diverse freshwater habitats and is an important migratory route for fish. Protecting this watershed from nutrient pollution is critical for the ecological health of the Baltic Sea, which faces eutrophication challenges.

Frequently asked questions

The KOLO plant is located in Koło, a town in the Wielkopolskie province of Poland, near the Warta River.

The plant serves approximately 35,544 people, classifying it as a medium-sized agglomeration under EU regulations.

Treated effluent from the KOLO plant is discharged into the Warta River, which flows into the Oder River and ultimately reaches the Baltic Sea.

The plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size and may require tertiary treatment if the receiving water is sensitive.

In Poland, plants serving this population typically provide at least secondary (biological) treatment, with nutrient removal if discharging to sensitive areas like the Baltic Sea catchment.