LAS MESAS Wastewater Treatment Plant, Las Mesas, Castilla-La Mancha, Spain

LAS MESAS is a wastewater treatment plant located in Las Mesas, a municipality in the province of Ciudad Real, Castilla-La Mancha, Spain. The plant serves a population of approximately 3,437 residents, reflecting its role in managing domestic wastewater for this small inland community. The plant employs advanced treatment processes, which go beyond the secondary treatment standard 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 treated wastewater is discharged into the local watershed, which ultimately drains into the Guadiana River basin. The Guadiana River flows westward through Spain and Portugal before reaching the Gulf of Cádiz in the Atlantic Ocean. The advanced treatment helps protect the ecological integrity of the receiving water bodies and downstream ecosystems.

The plant discharges into the Guadiana River basin, one of the major river systems in the Iberian Peninsula. The Guadiana River supports diverse aquatic life and is an important water resource for agriculture and wildlife in the region. The advanced treatment provided by LAS MESAS helps maintain water quality in this basin, which flows through the arid landscapes of Castilla-La Mancha and eventually reaches the Atlantic Ocean.