Zdroje Wastewater Treatment Plant, Szczecin, Poland

Zdroje is a wastewater treatment plant located in the Zdroje district of Szczecin, in the West Pomeranian Voivodeship of Poland. Serving a population equivalent of 145,186, it is a significant facility for the city's eastern bank (Prawobrzeże). The plant is situated near the Odra River estuary, which flows into the Szczecin Lagoon and ultimately the Baltic Sea. As a large agglomeration under the EU Urban Waste Water Treatment Directive (91/271/EEC), the plant is expected to provide at least secondary treatment, with tertiary treatment required if the receiving waters are sensitive. The designed capacity of 1. Polish regulations align with EU directives, and the plant is likely permitted by the Regional Water Management Board (RZGW) in Szczecin. The plant's treated effluent discharges into the Odra River, which flows through the Szczecin Lagoon and into the Baltic Sea. This water body supports diverse aquatic life and is an important migratory corridor for fish. The plant plays a crucial role in protecting the lagoon and Baltic Sea from nutrient pollution, which can cause eutrophication.

The Zdroje plant discharges into the Odra River, which flows into the Szczecin Lagoon and then the Baltic Sea. This watershed is ecologically sensitive, supporting diverse aquatic life and serving as a key migratory route for fish species. The Baltic Sea is particularly vulnerable to nutrient enrichment, making advanced treatment important for protecting marine ecosystems.