ROWP SC APA CANAL SA sector Sadu - Sadu Wastewater Treatment Plant | Romania

ROWP SC APA CANAL SA sector Sadu is a municipal wastewater treatment plant located in Sadu, a commune in Sibiu County, Romania. The plant serves a population of approximately 1,970 residents, placing it in the small agglomeration category under Romanian and EU regulations. It is situated near the Izvor area along DJ105G, within the Carpathian foothills. 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. Its designed capacity is 2,800 m³/day, with an average daily discharge volume of 249.15 m³/day, indicating significant spare capacity. As a Romanian facility, it operates under the national water law (Law 107/1996) and is subject to permits issued by the Romanian Waters Authority (Apele Române). The treated effluent is discharged into a local watercourse that flows into the Sadu River, a tributary of the Cibin River, which eventually joins the Olt River and drains into the Danube River. The Olt River basin supports diverse aquatic life and is an important ecological corridor in the Carpathian region. The plant's operation helps protect downstream water quality in this sensitive mountainous watershed.

The plant discharges into a small stream that feeds the Sadu River, a tributary of the Cibin River. The Cibin flows into the Olt River, which ultimately reaches the Danube River and the Black Sea. This watershed is located in the Southern Carpathians, an ecologically sensitive area with diverse aquatic habitats. The secondary treatment provided by the plant reduces organic pollutants and suspended solids, helping to maintain the ecological health of the downstream rivers, which support fish populations and serve as water sources for local communities.