Terespol Wschod Wastewater Treatment Plant, Brest, Belarus

Terespol Wschod is a wastewater treatment plant located in Brest, Belarus, serving a population of 3,603. The plant is situated near the border with Poland and operates as part of the region's municipal wastewater infrastructure. The plant provides secondary treatment, which is the standard biological treatment stage required under the EU Urban Waste Water Treatment Directive for agglomerations of this size. Although Belarus is not an EU member, its wastewater regulations align with similar standards. The plant has a designed capacity of 7,300 m³/day and currently discharges 513.73 m³/day of treated effluent. The treated wastewater is discharged into the local water system, which ultimately drains into the Bug River, a tributary of the Narew River, and then into the Vistula River before reaching the Baltic Sea. This downstream connection highlights the plant's role in protecting the Baltic Sea catchment from nutrient pollution.

The plant's discharge enters the Bug River basin, which flows into the Narew and Vistula rivers, eventually reaching the Baltic Sea. The Baltic Sea is a sensitive marine environment prone to eutrophication from nutrient loads. Secondary treatment reduces organic matter and suspended solids, but without tertiary nutrient removal, the plant's effluent contributes to nitrogen and phosphorus levels in the downstream watershed. The region's agricultural land use further amplifies nutrient pressures on the aquatic ecosystem.