VALL D UIXO Wastewater Treatment Plant, la Vall d'Uixó, Comunitat Valenciana

VALL D UIXO is a wastewater treatment plant located in the industrial area of La Mesquita, serving the municipality of la Vall d'Uixó in the province of Castellón, Comunitat Valenciana, Spain. The plant handles wastewater from a population of around 45,013 people, placing it in the medium agglomeration category under EU classification. As a Spanish facility, the plant operates under the EU Urban Waste Water Treatment Directive 91/271/EEC, which requires secondary treatment for agglomerations of this size. Compliance with national regulations ensures appropriate treatment before discharge. The treated effluent is discharged into the local watershed, which drains into the Mediterranean Sea via the coastal plain of la Plana Baixa. The receiving water bodies support diverse aquatic life and are important for regional ecology. The plant plays a key role in protecting downstream water quality and the marine environment.

The plant discharges into the Mediterranean Sea via the coastal drainage system of la Plana Baixa. This region features a semi-arid climate with seasonal rivers that flow into the sea, supporting coastal wetlands and marine habitats. The treated effluent contributes to maintaining water quality in an ecologically sensitive coastal area that hosts diverse fish and bird species.