ROWP Nasaud Wastewater Treatment Plant, Năsăud, Romania

ROWP Nasaud is a municipal wastewater treatment plant located in Năsăud, Bistrița-Năsăud County, Romania. The plant serves a population of approximately 6,500 residents and has a designed capacity of 9,100 cubic meters per day, indicating it is sized for a medium agglomeration. The plant provides secondary treatment, which is the standard biological treatment required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for inland agglomerations of this size. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids before discharge. The treated effluent is discharged into local watercourses that drain into the Someș River, a major tributary of the Tisza River, which ultimately flows into the Danube River and the Black Sea. The plant plays a key role in protecting the Someș River basin from nutrient pollution and supporting downstream aquatic ecosystems.

The plant discharges into the Someș River basin, which flows into the Tisza River and then the Danube River before reaching the Black Sea. The Someș River supports diverse aquatic life and is an important migratory corridor for fish species. The plant's secondary treatment helps reduce organic load and nutrients, contributing to the ecological health of the downstream water bodies.