GWDA, Piła | Poland Wastewater

Overview

GWDA wastewater treatment plant serves Piła, Poland, with a population equivalent of 133,808. It operates under EU Urban Waste Water Treatment Directive 91/271/EEC, which mandates secondary treatment for agglomerations of this scale.

GWDA is a wastewater treatment plant located in Piła, a city in the Greater Poland Voivodeship of Poland. The plant serves a population equivalent of 133,808, classifying it as a large agglomeration under EU regulations. As a large agglomeration, GWDA is required to meet the standards of the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment for all discharges from agglomerations of this size. The directive also requires more stringent treatment if the receiving waters are designated as sensitive areas. The plant's treated effluent is discharged into the local watershed, which ultimately drains into the Baltic Sea via the Noteć River and the Warta River. The Baltic Sea is a sensitive marine environment, and the plant's operation contributes to protecting its ecological health by reducing nutrient loads and pollutants.

Environmental context

GWDA discharges into the Noteć River basin, which flows into the Warta River and then the Oder River, eventually reaching the Baltic Sea. The Baltic Sea is a brackish, semi-enclosed sea with limited water exchange, making it highly sensitive to nutrient pollution. The plant's treatment helps mitigate eutrophication risks in this ecologically important water body.

Frequently asked questions

GWDA is located in Piła, a city in the Greater Poland Voivodeship (województwo wielkopolskie) in northwestern Poland.

GWDA serves a population equivalent of 133,808, classifying it as a large agglomeration under the EU Urban Waste Water Treatment Directive.

GWDA discharges treated effluent into the local watershed, which flows into the Noteć River, then the Warta and Oder rivers, ultimately reaching the Baltic Sea.

As a large agglomeration (over 100,000 PE), GWDA is required to provide secondary treatment under the EU Urban Waste Water Treatment Directive (91/271/EEC). If the receiving waters are sensitive, tertiary treatment may be required.

In Poland, wastewater treatment plants serving agglomerations of this scale typically employ secondary biological treatment, often with nutrient removal to meet EU standards for sensitive areas like the Baltic Sea catchment.