ROWP SC APA CANAL SA sector Sura Mica Wastewater Treatment Plant, Șura Mică, Sibiu, Romania

ROWP SC APA CANAL SA sector Sura Mica is a municipal wastewater treatment plant located in Șura Mică, a commune in Sibiu County, central Romania. The plant serves a population of approximately 1,484 residents and is part of the local water infrastructure managed by the APA CANAL utility. The plant provides secondary treatment, which is the standard biological treatment required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations with a population equivalent between 2,000 and 10,000. With a designed capacity of 2,800 m³/day, the facility is sized to handle the community's wastewater flows. The current discharge volume is 446.56 m³/day, indicating operational capacity well below design. The treated effluent is discharged into local watercourses that eventually drain into the Cibin River, a tributary of the Olt River, which flows southward to the Danube River and ultimately the Black Sea. The plant plays a key role in protecting the Cibin River basin from untreated sewage, supporting water quality and aquatic life in this Transylvanian region.

The plant discharges into the Cibin River catchment, part of the Olt River basin, which flows into the Danube and then the Black Sea. The Cibin River supports diverse aquatic ecosystems and is used for recreation and agriculture downstream. Protecting this water body from nutrient and pathogen pollution is critical for maintaining ecological balance and meeting EU Water Framework Directive objectives.