PORT DE SANT MIQUEL Wastewater Treatment Plant, Ibiza, Spain

PORT DE SANT MIQUEL is a wastewater treatment plant located in Port de Sant Miquel, within the municipality of Sant Joan de Labritja on the island of Ibiza, Illes Balears, Spain. The plant serves a small population of 1,178 residents and operates with advanced treatment technology, ensuring high-quality effluent. As an advanced treatment facility, PORT DE SANT MIQUEL goes beyond secondary treatment to remove nutrients and other pollutants, meeting stringent standards for sensitive coastal areas. The plant has a designed capacity of 4,375 cubic meters per day and currently discharges 197.24 cubic meters per day, indicating ample reserve capacity. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), plants in sensitive areas like the Balearic Islands are required to provide tertiary treatment, which this facility exceeds. The treated effluent is discharged into the coastal waters of the Mediterranean Sea near Port de Sant Miquel. This area supports diverse marine life, including seagrass meadows and fish habitats, making advanced treatment essential for protecting local ecosystems and tourism-dependent waters.

The plant discharges into the Mediterranean Sea near Port de Sant Miquel on the northern coast of Ibiza. The coastal waters are part of the Balearic Sea, which supports ecologically sensitive seagrass meadows (Posidonia oceanica) and diverse marine species. Advanced treatment helps minimize nutrient loading and protects water quality for recreation and marine life.