Oczyszczalnia sciekow w Mielcu - Wastewater Treatment Plant in Mielec, Poland

Oczyszczalnia sciekow w Mielcu is a municipal wastewater treatment plant located in Mielec, within the Podkarpackie Voivodeship of southeastern Poland. The facility serves a population of around 71,357 people, classifying it as a medium-sized agglomeration under European Union classifications. As a Polish plant, it operates under the EU Urban Waste Water Treatment Directive 91/271/EEC, which requires secondary treatment for agglomerations of this size. The directive also mandates more advanced treatment if the receiving waters are designated as sensitive areas, which is common in the Vistula River basin. The treated effluent from the plant is discharged into the Wisłoka River, a tributary of the Vistula, which flows northward to the Baltic Sea. The plant plays a key role in protecting the Wisłoka and Vistula ecosystems from nutrient pollution, supporting aquatic biodiversity and downstream water quality.

The plant discharges into the Wisłoka River, which flows into the Vistula River and ultimately reaches the Baltic Sea. The Wisłoka supports diverse aquatic life and is part of a larger river system that provides habitat for migratory fish species. The Baltic Sea is a sensitive marine environment prone to eutrophication, making nutrient removal at treatment plants critical for regional water quality.