ROWP PRIMARIA COMUNEI Valea Larga - Primary Wastewater Treatment Plant in Valea Urieșului, Romania

ROWP PRIMARIA COMUNEI Valea Larga is a municipal wastewater treatment plant located in Valea Urieșului, a village in the commune of Valea Largă, Mureș County, Romania. The plant serves a small population of 83 residents, reflecting its role in a rural community. It is situated inland, far from coastal areas, and operates under Romania's national water management regulations. The plant provides primary treatment, which involves physical processes such as sedimentation to remove settleable solids. With a designed capacity of 100 m³/day and a current discharge volume of 3.03 m³/day, the facility operates well below its capacity. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), small agglomerations under 2,000 population equivalent (PE) are subject to national requirements, and Romania mandates appropriate treatment for such communities. The treated effluent is discharged into local watercourses that drain into the Mureș River basin, part of the Tisza River system, which ultimately flows into the Danube River and the Black Sea. The plant's operation helps protect the local aquatic environment and downstream water quality in this ecologically sensitive region.

The plant discharges into small streams that feed the Mureș River, a major tributary of the Tisza River, which flows into the Danube and reaches the Black Sea. The Mureș River supports diverse aquatic life and is an important ecological corridor in the Carpathian Basin. Primary treatment reduces suspended solids but does not remove nutrients, so the plant's impact on downstream water quality is limited by its small scale.