ROWP SC HIDRO PRAHOVA SA sucursala Comarnic - Primary Wastewater Treatment Plant in Prahova, Romania

ROWP SC HIDRO PRAHOVA SA sucursala Comarnic is a wastewater treatment plant located in Ghioșești, Comarnic, Prahova County, Romania. It serves a population of approximately 1,260, classifying it as a small agglomeration under Romanian and EU regulations. The plant provides primary treatment, which involves physical processes like sedimentation to remove solids. While primary treatment is less advanced than secondary or tertiary, the plant's designed capacity of 36,000 m³/day suggests it can handle higher loads. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), small agglomerations like this may be subject to less stringent requirements, but Romania's national regulations aim to improve treatment levels over time. The treated effluent is discharged into local watercourses that eventually flow into the Prahova River, a tributary of the Ialomița River, which drains into the Danube River and ultimately the Black Sea. The plant plays a role in protecting these downstream waters from untreated pollution, supporting aquatic life and water quality in the region.

The plant discharges into the Prahova River basin, which flows into the Ialomița River, a major tributary of the Danube. The Danube then empties into the Black Sea. This watershed supports diverse aquatic ecosystems, including fish spawning grounds and migratory bird habitats. Primary treatment reduces suspended solids but may not fully address nutrient pollution, which can contribute to eutrophication in downstream waters like the Black Sea.