Overview
EZCARAY wastewater treatment plant serves the town of Ezcaray in La Rioja, Spain. It treats wastewater from a population of approximately 5,119 under the EU Urban Waste Water Treatment Directive.
The EZCARAY wastewater treatment plant is located in the town of Ezcaray, in the La Rioja province of northern Spain. The facility serves a population of around 5,119, classifying it as a small agglomeration under EU regulations. As a Spanish plant, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires appropriate treatment for discharges into freshwater and estuarine areas. The plant discharges into the local watershed, which ultimately drains into the Ebro River basin. The Ebro River flows eastward to the Mediterranean Sea, supporting diverse aquatic ecosystems and agricultural water use in the region.
Environmental context
The plant's treated effluent enters the Oja River, a tributary of the Ebro River. The Ebro River basin is one of Spain's largest watersheds, supporting irrigated agriculture and wetlands of ecological importance. Downstream, the Ebro Delta provides critical habitat for migratory birds and fish species. The plant's location in the upper Oja valley means its discharge influences water quality in a region known for its wine production and natural landscapes.
Frequently asked questions
The EZCARAY plant is located at Avenida de Santo Domingo de la Calzada in Ezcaray, La Rioja, Spain.
The plant serves approximately 5,119 people, classifying it as a small agglomeration under EU regulations.
The plant discharges treated effluent into the Oja River, which flows into the Ebro River and eventually reaches the Mediterranean Sea.
As a Spanish facility, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment for agglomerations of this size discharging into freshwater.
For small agglomerations in Spain, secondary treatment is typically required, often involving biological processes such as activated sludge or trickling filters, to meet EU effluent standards.
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