MONTESA Wastewater Treatment Plant, Montesa, Comunitat Valenciana

The MONTESA wastewater treatment plant is located in Montesa, a municipality in the La Costera comarca of Valencia, Comunitat Valenciana, Spain. The plant serves a population of approximately 3,125 residents and has a designed capacity of 3,000 cubic meters per day, with an average discharge volume of 343.78 m³/day. As a secondary treatment facility, MONTESA provides biological treatment to reduce organic matter and suspended solids. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), plants serving agglomerations of this size (under 10,000 population equivalent) are required to achieve secondary treatment standards. The plant's capacity utilization appears moderate, indicating operational stability. The treated effluent is discharged into a local watercourse that ultimately drains into the Mediterranean Sea. The plant plays a key role in protecting the local watershed and downstream aquatic ecosystems from untreated wastewater pollution. Its inland location reduces direct marine impact, but the discharge still affects the regional river basin and coastal water quality.

The MONTESA plant discharges into a tributary of the Júcar River basin, which flows eastward into the Mediterranean Sea near Cullera. The Júcar basin supports diverse aquatic life and is an important agricultural and ecological resource in the region. The plant's secondary treatment helps reduce nutrient loads and organic pollution, contributing to the health of downstream water bodies and the coastal environment.