MONTEAGUDO Wastewater Treatment Plant, Monteagudo, Navarra, Spain

The MONTEAGUDO wastewater treatment plant is located in Monteagudo, a municipality in the province of Navarra, northern Spain. The facility serves a population of around 5,047 people, classifying it as a small agglomeration under European Union regulations. The plant is situated inland, away from coastal areas, and its treated effluent is discharged into local watercourses that ultimately drain into the Ebro River basin. As a secondary treatment plant, MONTEAGUDO provides biological treatment to remove organic matter and suspended solids. The designed capacity of 5,500 cubic meters per day indicates the plant is sized to handle peak flows, with current discharge volumes reported at 749 cubic meters per day. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), secondary treatment is the minimum requirement for agglomerations of this size, ensuring compliance with European environmental standards. The plant's discharge contributes to the protection of the Ebro River basin, a major hydrological system in northeastern Spain. The Ebro River flows into the Mediterranean Sea, supporting diverse aquatic ecosystems and agricultural activities. By treating wastewater to secondary standards, MONTEAGUDO helps reduce nutrient loading and organic pollution in the receiving waters, safeguarding downstream water quality and ecological health.

The MONTEAGUDO plant discharges treated wastewater into local streams that feed into the Ebro River, one of Spain's largest rivers. The Ebro basin supports a variety of aquatic life and is an important agricultural region. Downstream, the river forms a delta on the Mediterranean coast, a wetland of high ecological value that provides habitat for numerous bird species and fish. Effective wastewater treatment at Monteagudo helps prevent eutrophication and maintains water quality in this sensitive downstream environment.