QUISMONDO Wastewater Treatment Plant, Quismondo, Castilla-La Mancha, Spain

QUISMONDO is a wastewater treatment plant located in Quismondo, a town in the province of Toledo, within the autonomous community of Castilla-La Mancha, Spain. The plant serves a population of approximately 3,360 residents, making it a small-scale facility in a rural inland setting. The plant employs advanced treatment processes, which go beyond the secondary treatment required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. This level of treatment ensures high-quality effluent suitable for discharge into sensitive environments. The plant discharges an average of 728 cubic meters of treated wastewater per day. The treated effluent from QUISMONDO is discharged into local watercourses that ultimately drain into the Tagus River basin, one of the most important river systems in the Iberian Peninsula. The Tagus River flows westward through Spain and Portugal, emptying into the Atlantic Ocean near Lisbon. The advanced treatment helps protect the ecological health of these downstream waters.

The plant discharges into the Tagus River basin, which supports diverse aquatic life and provides water for agriculture and human consumption. The Tagus River is a major migratory corridor for fish species such as the European eel. Advanced treatment at QUISMONDO reduces nutrient loads, helping to prevent eutrophication in downstream reservoirs and the river's estuary.