ROWP SNGN ROMGAZ SA MEDIAS SECTIA DANES Wastewater Treatment Plant, Seleuș, Romania

ROWP SNGN ROMGAZ SA MEDIAS SECTIA DANES is a wastewater treatment plant located in Seleuș, a village in Daneș commune, Mureș County, Romania. The plant serves a small population of 537 and is operated as part of the Romgaz industrial infrastructure, reflecting the area's energy sector presence. 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 with a population equivalent between 2,000 and 10,000. With a designed capacity of 3,000 m³/day, the plant is appropriately scaled for its service area. The current discharge volume is 56.31 m³/day, indicating low utilization relative to capacity. The treated effluent is discharged into local watercourses that drain into the Târnava Mare River, a tributary of the Mureș River, which flows into the Tisza River and ultimately the Danube River and Black Sea. The plant plays a role in protecting the Târnava Mare watershed from nutrient and organic pollution, supporting downstream aquatic ecosystems.

The plant discharges into the Târnava Mare River basin, part of the larger Mureș River system that flows into the Tisza and Danube Rivers before reaching the Black Sea. This watershed supports diverse aquatic life and is used for agriculture and drinking water supply. The secondary treatment reduces organic load and suspended solids, helping to maintain water quality in a region where small communities rely on healthy streams.