ETAR de Punta Blanca - Primary Wastewater Treatment Plant in Guía de Isora, Tenerife

ETAR de Punta Blanca is a wastewater treatment plant located in Guía de Isora, on the island of Tenerife in the Canary Islands, Spain. The plant serves a small population of approximately 1,988 residents and has a designed capacity of 10,000 cubic meters per day, indicating it is sized for future growth or seasonal peaks. The plant provides primary treatment, which involves physical processes like sedimentation to remove solids. Under Spanish regulations implementing the EU Urban Waste Water Treatment Directive (91/271/EEC), agglomerations of this size typically require secondary treatment. However, primary treatment may be permitted for discharges into coastal waters with adequate dilution, subject to authorization. The treated effluent is discharged into the Atlantic Ocean, given the plant's coastal location on the western side of Tenerife. The surrounding marine environment supports diverse aquatic life and is important for local fisheries and tourism. The Canary Islands' volcanic terrain and limited freshwater resources make wastewater treatment crucial for protecting coastal water quality.

The plant discharges into the Atlantic Ocean near the coast of Tenerife, part of the Canary Islands archipelago. The receiving waters are ecologically sensitive, supporting marine biodiversity including sea turtles, cetaceans, and endemic fish species. The volcanic island's steep terrain and limited freshwater resources mean that coastal discharges must be carefully managed to prevent nutrient enrichment and protect nearshore habitats such as seagrass meadows and rocky reefs.