Overview
Ostrołęka wastewater treatment plant serves over 50,000 people in Ostrołęka, Mazovia, Poland. It operates under the EU Urban Waste Water Treatment Directive, ensuring proper treatment before discharge.
The Ostrołęka wastewater treatment plant is located in Ostrołęka, in the Mazovian Voivodeship of Poland, serving a population of approximately 50,904. As a medium-sized agglomeration, the plant plays a key role in managing municipal wastewater for the city and surrounding areas. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), plants serving populations over 15,000 are required to provide secondary treatment, with more stringent tertiary treatment in sensitive areas. The plant is expected to meet these standards to protect local water quality. The treated effluent is discharged into the Narew River, a major tributary of the Vistula River, which flows into the Baltic Sea. This makes the plant's performance critical for the health of the Narew River ecosystem and downstream environments, including the Vistula delta and Baltic coastal waters.
Environmental context
The plant discharges into the Narew River, which flows into the Vistula River and ultimately reaches the Baltic Sea. The Narew River supports diverse aquatic life and is an important ecological corridor. The Baltic Sea is a sensitive marine environment, making nutrient removal and proper treatment essential to prevent eutrophication and protect coastal ecosystems.
Frequently asked questions
The plant is located in Ostrołęka, in the Mazovian Voivodeship of Poland, near the Narew River.
The plant serves approximately 50,904 people, classifying it as a medium-sized agglomeration under EU regulations.
Treated wastewater is discharged into the Narew River, which flows into the Vistula River and then into 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.
In Poland, plants serving over 15,000 people typically provide secondary biological treatment, with nutrient removal in sensitive areas to protect the Baltic Sea.
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