PORZUNA Wastewater Treatment Plant, Porzuna, Castilla-La Mancha, Spain

The PORZUNA wastewater treatment plant is located in Porzuna, a municipality in the province of Ciudad Real, within the autonomous community of Castilla-La Mancha, Spain. The plant serves a population of approximately 5,085 residents, providing secondary treatment to manage domestic wastewater from the community. As a secondary treatment facility, the plant meets the minimum treatment standard required under the European Union's Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. The directive mandates secondary treatment for populations between 2,000 and 10,000, ensuring effective removal of organic matter and suspended solids before discharge. The treated effluent volume is reported at 241.00 cubic meters per day. The plant's discharge likely enters a local watercourse that flows into the Guadiana River basin, which drains into the Gulf of Cádiz. This river system supports diverse aquatic life and agricultural activities in the region, making proper treatment essential for protecting downstream water quality.

The plant discharges into a local tributary within the Guadiana River basin, one of the major river systems in the Iberian Peninsula. The Guadiana flows southwest through Spain and Portugal, eventually reaching the Gulf of Cádiz in the Atlantic Ocean. The watershed supports irrigated agriculture and wetland habitats, including areas important for migratory birds. Secondary treatment helps reduce organic pollution and nutrient loads, protecting the ecological health of the receiving waters.