TOUS Wastewater Treatment Plant, Alzira, Comunitat Valenciana

TOUS is a wastewater treatment plant located in Alzira, within the Comunitat Valenciana region of Spain. It serves a population of 1,320 and operates under Spain's implementation of the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size. The plant has a designed capacity of 2,000 cubic meters per day and currently treats approximately 252.64 cubic meters daily. The plant employs secondary treatment, which typically involves biological processes to reduce organic matter and suspended solids. As a facility serving a small agglomeration, it meets the EU directive's baseline requirements for secondary treatment before discharge. The regulatory framework ensures compliance with effluent standards to protect water quality. The treated effluent is discharged into the local water system, which ultimately drains into the Mediterranean Sea via the Júcar River basin. The plant plays a role in safeguarding the ecological health of the Júcar River and the coastal waters of the Gulf of Valencia, supporting aquatic life and preventing nutrient pollution in this agriculturally important region.

The plant discharges into the Júcar River basin, which flows eastward into the Mediterranean Sea at the Gulf of Valencia. This coastal area supports diverse marine ecosystems and is important for fisheries and tourism. The secondary treatment provided by the plant helps reduce organic loading and nutrient inputs, protecting downstream water quality in a region with intensive agriculture and urban development.