Overview
REZA OURENSE is a municipal wastewater treatment plant serving Ourense, Galicia, Spain. It treats wastewater from approximately 156,500 people and discharges into the Miño River.
REZA OURENSE is a municipal wastewater treatment plant located in Ourense, Galicia, Spain. Situated along the Paseo Fluvial do Miño, the plant serves a population of approximately 156,500 people, classifying it as a large agglomeration under EU regulations. As a Spanish facility, REZA OURENSE operates under the EU Urban Waste Water Treatment Directive 91/271/EEC, which requires secondary treatment for agglomerations over 15,000 population equivalent and tertiary treatment in sensitive areas. The Miño River basin is designated as a sensitive area under the directive, necessitating advanced treatment to reduce nutrient pollution. The plant's treated effluent is discharged into the Miño River, which flows through Galicia and forms part of the border with Portugal before reaching the Atlantic Ocean at the Ría de Vigo. The Miño supports diverse aquatic life and is an important ecological corridor for migratory fish species.
Environmental context
REZA OURENSE discharges into the Miño River, which flows southwest through Galicia and into the Atlantic Ocean at the Ría de Vigo. The Miño basin supports a variety of freshwater and estuarine habitats, including riparian forests and wetlands that provide critical spawning grounds for migratory fish such as Atlantic salmon and sea lamprey. Nutrient loading from upstream sources can impact water quality in the lower river and estuary.
Frequently asked questions
REZA OURENSE is located in Ourense, Galicia, Spain, along the Paseo Fluvial do Miño in the Reza district.
REZA OURENSE serves approximately 156,500 people, classifying it as a large agglomeration under EU regulations.
The plant discharges treated wastewater into the Miño River, which flows through Galicia and into the Atlantic Ocean.
As a Spanish plant, REZA OURENSE operates under the EU Urban Waste Water Treatment Directive 91/271/EEC, which mandates secondary treatment for large agglomerations and tertiary treatment in sensitive areas like the Miño basin.
Under the EU UWWTD, plants serving over 150,000 population equivalent in sensitive areas like the Miño basin typically require tertiary treatment to reduce nutrients such as nitrogen and phosphorus.
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