ROWP SC APAVIL SA Bunesti Wastewater Treatment Plant, Râpănești, Vâlcea

ROWP SC APAVIL SA Bunesti is a municipal wastewater treatment plant located in Râpănești, a village in Vâlcea County, Romania. The plant serves a small population of 605 residents, reflecting its role in a rural community. Its designed capacity of 2500 m³/day indicates potential for future growth or seasonal demand. The plant provides secondary treatment, which is the standard biological treatment stage required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. Although Romania has transposed the directive into national law, small plants serving under 2,000 population equivalent may have adapted compliance timelines. The plant's discharge volume of 29.18 m³/day is well within its designed capacity. The treated effluent is discharged into a local watercourse that eventually drains into the Olt River, a major tributary of the Danube. The Danube then flows into the Black Sea, making this plant part of a large transboundary river basin. Proper treatment helps protect downstream aquatic ecosystems and water quality in the Danube Delta region.

The plant discharges into a small tributary of the Olt River, which flows southward through the Carpathian foothills to join the Danube. The Olt River supports diverse freshwater habitats and is used for irrigation and recreation. Downstream, the Danube Delta is a vast wetland of ecological importance, hosting numerous bird species and fish. Effective secondary treatment reduces organic pollutants and nutrients, helping to prevent eutrophication in the Black Sea.