ROWP SC HIDRO PRAHOVA SA sucursala Slanic - Slănic Wastewater Treatment Plant

ROWP SC HIDRO PRAHOVA SA sucursala Slanic is a wastewater treatment facility located in Slănic, Prahova County, Romania. The plant serves a population of approximately 3,549 residents, classifying it as a small agglomeration under Romanian and EU regulations. It is situated in the Subcarpathian region, an area characterized by hilly terrain and a continental climate. 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. The designed capacity of 22,500 m³/day suggests the facility is sized to accommodate future growth or industrial inflows. The current discharge volume is 175.24 m³/day, indicating significant spare capacity. The treated effluent is discharged into local watercourses that ultimately drain into the Ialomița River, a tributary of the Danube. The Danube then flows into the Black Sea. The plant plays a key role in protecting the local watershed from untreated sewage, supporting aquatic life and downstream water quality in the Danube basin.

The plant discharges into the Ialomița River basin, which flows southeast to join the Danube before reaching the Black Sea. This watershed supports diverse aquatic ecosystems, including fish species such as carp and pike. The region's hilly terrain and seasonal rainfall patterns can affect runoff and dilution capacity, making consistent treatment important for maintaining ecological balance in downstream water bodies.