ROWP COTNARI Wastewater Treatment Plant, Bahluiu, Iași, Romania

ROWP COTNARI is a municipal wastewater treatment plant located in Bahluiu, within the Cotnari commune of Iași County, Romania. The plant serves a small population of 105 residents, reflecting its role in a rural community. Its location in the Moldavia region places it within a landscape of rolling hills and agricultural activity. The plant provides secondary treatment, which is the standard biological treatment required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations with a population equivalent below 2,000. With a designed capacity of 2,614 m³/day and an actual discharge volume of 73.88 m³/day, the plant operates well below its capacity, indicating low utilization. The regulatory framework ensures that treated effluent meets quality standards for discharge into local water bodies. The treated wastewater from ROWP COTNARI is discharged into the local hydrographic network, which ultimately drains into the Prut River basin and then into the Danube River, reaching the Black Sea. This connection underscores the plant's role in protecting downstream aquatic ecosystems and the Black Sea coastal environment from nutrient pollution and other contaminants.

The plant's discharge enters the local stream network, which flows into the Bahlui River, a tributary of the Jijia River, part of the Prut River basin. The Prut River eventually joins the Danube, which empties into the Black Sea. This watershed supports diverse aquatic life and is important for migratory fish species. The region's agricultural land use means that nutrient management from wastewater is critical to prevent eutrophication in downstream water bodies.