OLVERA SUR Wastewater Treatment Plant, Olvera, Andalucía, Spain

OLVERA SUR is a wastewater treatment plant located in Olvera, a municipality in the Sierra de Cádiz region of Andalucía, Spain. The plant serves a population of approximately 6,630 people, classifying it as a small agglomeration under EU terminology. It is situated inland, away from coastal areas, and its operations are subject to Spanish and European wastewater regulations. As a plant serving fewer than 10,000 population equivalent, OLVERA SUR falls under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires appropriate treatment based on the sensitivity of the receiving waters. The plant is expected to provide at least secondary treatment to meet EU standards for inland discharges. The treated effluent from OLVERA SUR is discharged into local watercourses that eventually drain into the Guadalquivir River basin, which flows into the Atlantic Ocean at the Gulf of Cádiz. The plant plays a key role in protecting the region's water quality, supporting both agricultural activities and the ecological health of downstream aquatic habitats.

OLVERA SUR discharges into local streams that are part of the Guadalquivir River basin, one of Spain's major river systems. The Guadalquivir flows through Andalucía and empties into the Atlantic Ocean at the Gulf of Cádiz. The downstream environment supports diverse aquatic life and is important for migratory birds and fisheries. The plant's treatment helps maintain water quality in this ecologically sensitive watershed.