ROWP Nistru Wastewater Treatment Plant - Tăuții-Măgherăuș, Maramureș, Romania

ROWP Nistru is a municipal wastewater treatment facility located in the Nistru area of Tăuții-Măgherăuș, Maramureș County, Romania. The plant serves a population of 863 and has a designed capacity of 3,500 m³/day, indicating it operates well below its full potential. Its location in the historic Maramureș region places it within a rural landscape near the foothills of the Eastern Carpathians. 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 (PE) between 2,000 and 10,000. Although the plant's current population served is below 2,000, the designed capacity suggests it can accommodate future growth. The facility is operated as part of Romania's national wastewater infrastructure, which is regulated by the National Administration of Romanian Waters (ANAR) and must comply with EU discharge standards. The treated effluent from ROWP Nistru is discharged into a local tributary that eventually flows into the Someș River, a major watercourse in northwestern Romania. The Someș River drains into the Tisza River, which then joins the Danube and ultimately reaches the Black Sea. This connection highlights the plant's role in protecting downstream water quality in a transboundary river basin that supports diverse aquatic ecosystems and agricultural activities.

The plant discharges into a small tributary of the Someș River, which flows through Maramureș and into Hungary before joining the Tisza. The Someș-Tisza system is an important ecological corridor for fish species such as the Danube salmon and supports riparian habitats. Downstream, the Tisza River is a major tributary of the Danube, and the Black Sea receives the cumulative load from the entire basin. Protecting water quality in this watershed is critical for maintaining biodiversity and supporting local communities that rely on the river for water supply and recreation.