CAMBIL Wastewater Treatment Plant, Cambil, Andalucía, Spain

CAMBIL is a wastewater treatment plant located in Cambil, a town in the province of Jaén, Andalucía, southern Spain. The facility serves a population of around 4,091 and has a designed capacity of 4,100 cubic meters per day, with an average discharge volume of 741.48 m³/day. As a secondary treatment plant, CAMBIL meets the standard required under the EU 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 in inland areas, which aligns with the plant's scale and treatment level. The treated effluent is discharged into the local water system, which ultimately drains into the Guadalquivir River basin. The Guadalquivir River flows through Andalucía and empties into the Atlantic Ocean at the Gulf of Cádiz, supporting diverse aquatic ecosystems and agricultural irrigation along its course.

The plant discharges into the Guadalquivir River basin, a major watershed in southern Spain that flows through Jaén and other provinces before reaching the Atlantic Ocean. The Guadalquivir supports a variety of aquatic life and is important for regional agriculture and biodiversity. Downstream areas include wetlands and estuaries that provide critical habitat for migratory birds and fish species.