EDAR de Buenavista del Norte - Secondary Wastewater Treatment Plant in Buenavista del Norte, Tenerife, Spain

EDAR de Buenavista del Norte is a municipal wastewater treatment plant located in Buenavista del Norte, on the island of Tenerife in the Canary Islands, Spain. The plant serves a population of 2,574 and has a designed capacity of 4,000 m³/day, with a current discharge volume of 466.53 m³/day. As a secondary treatment facility, the plant provides biological treatment to reduce organic matter and suspended solids. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), secondary treatment is the minimum standard for discharges to coastal waters, and plants serving agglomerations of this size are required to meet effluent quality standards. The plant's location on a volcanic island with steep terrain and limited freshwater resources makes wastewater treatment critical for protecting both public health and the environment. The treated effluent is discharged into the Atlantic Ocean near the northwestern coast of Tenerife. The surrounding marine environment supports diverse ecosystems, including seagrass meadows and rocky reefs that provide habitat for fish and invertebrates. The Canary Islands are a biodiversity hotspot, and proper wastewater treatment helps prevent nutrient enrichment and protect coastal water quality.

The plant discharges treated wastewater into the Atlantic Ocean off the northwestern coast of Tenerife. The coastal waters are part of the Macaronesian biogeographic region, known for high endemism and sensitive marine habitats such as seagrass beds and coral communities. Nutrient inputs from wastewater can lead to eutrophication and algal blooms, so secondary treatment is essential to maintain water quality and protect the ecological integrity of the surrounding marine environment.