ROWP SC APAVIL SA Salatrucel Wastewater Treatment Plant, Pătești, Vâlcea County

ROWP SC APAVIL SA Salatrucel is a wastewater treatment plant located on Strada Stejarului in Pătești, a locality within Sălătrucel commune, Vâlcea County, Romania. The plant serves a population of approximately 660 residents, reflecting its role in managing domestic wastewater for a small rural community in the southern Carpathian foothills. The plant provides secondary treatment, which is the standard biological treatment stage required under Romanian and EU regulations for agglomerations of this size. Secondary treatment typically involves biological oxidation and sedimentation to reduce organic matter and suspended solids. The plant has a designed capacity of 2,500 m³/day and currently discharges 99.54 m³/day, indicating significant spare capacity. The treated effluent is discharged into a local watercourse that ultimately drains into the Olt River, a major tributary of the Danube. The Olt River flows southward through the Carpathian Mountains and into the Danube, which then reaches the Black Sea. The plant's operation helps protect the Olt River basin from untreated sewage, supporting aquatic life and downstream water quality.

The plant discharges into a tributary of the Olt River, which flows through Vâlcea County and joins the Danube in Bulgaria. The Olt River supports diverse aquatic ecosystems and is used for irrigation and recreation. Downstream, the Danube Delta is a ecologically sensitive region that relies on upstream water quality management. The plant's secondary treatment reduces organic pollution, helping to maintain the ecological balance of the Olt basin.