ROWP Sacalaseni Wastewater Treatment Plant - Săcălășeni, Maramureș, Romania

ROWP Sacalaseni is a municipal wastewater treatment plant located in Săcălășeni, Maramureș County, Romania. The facility serves a population of approximately 4,019 residents and operates with a designed capacity of 2,800 cubic meters per day. As a secondary treatment plant, it provides biological treatment to reduce organic pollutants before discharge. The plant operates under Romania's implementation of the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations with a population equivalent above 2,000. For smaller agglomerations like Săcălășeni, appropriate treatment must ensure receiving waters meet quality standards. The facility's discharge volume is reported at 336.96 thousand cubic meters annually. The treated effluent is discharged into local watercourses within the Someș River basin, which flows through northwestern Romania into Hungary, eventually reaching the Tisza River and the Danube. The Someș River supports diverse aquatic life and is used for irrigation and recreation. Proper treatment helps protect downstream water quality and ecosystems.

The plant discharges into the Someș River basin, part of the larger Tisza-Danube system. The Someș River flows through Maramureș and Satu Mare counties before crossing into Hungary. This watershed supports a variety of fish species and provides habitat for waterfowl. Downstream, the Tisza River is an important ecological corridor in Central Europe, and the Danube Delta is a major wetland ecosystem. Effective wastewater treatment at ROWP Sacalaseni helps reduce nutrient and organic pollution loads to these sensitive environments.