ROWP SC Termoconstruct SA Sebis Wastewater Treatment Plant, Sebiș, Romania

ROWP SC Termoconstruct SA Sebis is a municipal wastewater treatment plant located in Sebiș, Arad County, Romania. The facility serves a population of approximately 4,065, classifying it as a small agglomeration under Romanian and EU regulations. It operates as part of the country's wastewater infrastructure, contributing to the protection of local water resources. The plant provides secondary treatment, which is the standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids. The plant's designed capacity is 6,480 m³/day, with a reported discharge volume of 642.24 m³/day, indicating it operates well below its capacity. The treated effluent is discharged into a local watercourse, which ultimately drains into the Crișul Alb River and then into the Körös River system, eventually reaching the Tisza River and the Danube. This downstream connection highlights the plant's role in maintaining water quality in the broader Danube basin, a region of significant ecological importance.

The plant discharges into a tributary of the Crișul Alb River, which flows into the Körös River system, a part of the Tisza River basin. The Tisza ultimately joins the Danube, which empties into the Black Sea. This watershed supports diverse aquatic life and is an important migratory corridor for fish species. The plant's secondary treatment helps reduce nutrient and organic pollution, protecting downstream ecosystems from eutrophication and oxygen depletion.