ROWP Zervesti Wastewater Treatment Plant, Turnu Ruieni, Caraș-Severin, Romania

ROWP Zervesti is a municipal wastewater treatment plant located in Turnu Ruieni, Caraș-Severin County, Romania. The facility serves a population of approximately 2,300 people, classifying it as a small agglomeration under Romanian and EU regulations. The plant provides secondary treatment, which is the minimum standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for freshwater discharges from agglomerations of this size. With a designed capacity of 3,000 m³/day and a current discharge volume of about 230.9 m³/day, the plant operates well below its capacity. The treated effluent is discharged into a local watercourse that flows into the Bârzava River, part of the Tisa River basin, ultimately draining into the Danube River and the Black Sea. The plant plays a key role in protecting local water quality and downstream ecosystems.

The plant discharges into a tributary of the Bârzava River, which flows into the Tisa River system, a major tributary of the Danube. The Danube carries water through several countries before reaching the Black Sea. The local watershed supports diverse aquatic life and is important for regional biodiversity. Secondary treatment reduces organic pollutants and suspended solids, helping to maintain the ecological health of the receiving waters.