SONSECA Wastewater Treatment Plant, Orgaz, Castilla-La Mancha, Spain

SONSECA is a wastewater treatment plant located in Orgaz, a municipality in the province of Toledo, within the autonomous community of Castilla-La Mancha, Spain. The plant serves a population of around 10,805, placing it in the medium agglomeration category under European Union classifications. It operates under Spain's implementation of the EU Urban Waste Water Treatment Directive (91/271/EEC), which sets standards for collection and treatment of urban wastewater. As a plant serving a population equivalent of over 10,000, SONSECA is required to provide secondary treatment or equivalent under the EU directive. The specific treatment process and capacity details are not publicly available, but the regulatory framework ensures that the plant meets the necessary standards for protecting water quality. The plant's inland location, more than 50 km from the coast, means its treated effluent discharges into a freshwater system rather than directly into marine waters. The treated wastewater from SONSECA likely discharges into a tributary of the Tagus River basin, which is the longest river in the Iberian Peninsula. The Tagus flows westward through Spain and Portugal, eventually reaching the Atlantic Ocean near Lisbon. The plant's operations contribute to maintaining the ecological health of the local watershed and the downstream river system, which supports diverse aquatic life and is used for irrigation and water supply.

SONSECA is situated inland in the Tagus River basin, which drains into the Atlantic Ocean. The receiving water body is likely a small tributary that feeds into the Tagus, a major river supporting agricultural irrigation and freshwater ecosystems. The region's Mediterranean climate with seasonal rainfall means that consistent treatment is important to prevent nutrient loading and maintain water quality in downstream reservoirs and rivers.