Miedzyrzec Podlaski Wastewater Treatment Plant - Międzyrzec Podlaski, Poland

The Miedzyrzec Podlaski wastewater treatment plant is located in the town of Międzyrzec Podlaski, in województwo lubelskie, eastern Poland. It serves a population of approximately 9,980 people, classifying it as a small to medium agglomeration under EU regulations. The plant is part of the municipal infrastructure managed by the local authorities. As a Polish facility, the plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations with a population equivalent (PE) between 2,000 and 15,000. For larger agglomerations, more stringent treatment may be required if the receiving water body is designated as sensitive. The regulatory framework ensures compliance with EU standards. The treated wastewater is discharged into the local water system, which ultimately drains into the Krzna River, a tributary of the Bug River. The Bug River flows northward to join the Narew and then the Vistula, which empties into the Baltic Sea. This watershed supports diverse aquatic life and is an important ecological corridor in the region.

The plant discharges into the Krzna River basin, which flows into the Bug River, a major tributary of the Vistula. The Vistula drains into the Baltic Sea, making this plant part of a transboundary watershed. The region's aquatic ecosystems support diverse species, including fish and migratory birds, and the river corridors are ecologically sensitive areas that benefit from proper wastewater treatment.