NOMBELA Wastewater Treatment Plant, Nombela, Castilla-La Mancha, Spain

The NOMBELA wastewater treatment plant is located in the municipality of Nombela, in the province of Toledo, within the autonomous community of Castilla-La Mancha, Spain. The plant serves a population of approximately 2,114 residents, reflecting its role as a small-scale municipal facility in a rural inland setting. As a secondary treatment plant, NOMBELA meets the standard required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations with a population equivalent between 2,000 and 10,000. This directive mandates secondary treatment to reduce organic pollution and suspended solids before discharge into receiving waters. The treated effluent from the plant is discharged into local watercourses that ultimately drain into the Tagus River basin, one of the major river systems in the Iberian Peninsula. The Tagus River flows westward through Spain and Portugal, emptying into the Atlantic Ocean near Lisbon. The plant's operations help protect the ecological health of this important river system and its downstream environments.

The NOMBELA plant discharges into the Tagus River basin, which supports diverse aquatic life and provides water for agriculture and human consumption. The Tagus River flows through central Spain and Portugal, forming a vital corridor for migratory birds and fish species. The plant's secondary treatment reduces organic load and nutrients, helping to maintain water quality in this ecologically sensitive watershed.