ROMERALEL Wastewater Treatment Plant, El Romeral, Castilla-La Mancha, Spain

ROMERALEL is a wastewater treatment plant located in El Romeral, a municipality in the province of Toledo, within the autonomous community of Castilla-La Mancha, Spain. The plant serves a population of approximately 2,188 people, classifying it as a small agglomeration under Spanish and EU regulations. The plant provides secondary treatment, which is the standard biological treatment required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for freshwater discharges from agglomerations of this size. The plant's discharge volume is recorded at 513.00 units, indicating its operational scale within the local infrastructure. The treated effluent is discharged into the local hydrological network, which ultimately drains into the Tagus River basin. The Tagus River is the longest river in the Iberian Peninsula, flowing westward through Spain and Portugal to the Atlantic Ocean. The plant's operations contribute to protecting water quality in this important basin, supporting downstream ecosystems and water uses.

The plant discharges into the Tagus River basin, which flows through central Spain and into Portugal, emptying into the Atlantic Ocean near Lisbon. The Tagus River supports diverse aquatic life and is a critical water resource for agriculture and urban areas. The secondary treatment provided by the plant helps reduce organic pollutants and protect the ecological health of the river system.