Overview
The Calahorra wastewater treatment plant serves approximately 85,873 people in La Rioja, Spain. It operates under the EU Urban Waste Water Treatment Directive, which mandates secondary treatment for agglomerations of this scale.
The Calahorra wastewater treatment plant is located in Calahorra, a city in the autonomous community of La Rioja, Spain. Serving a population of approximately 85,873, the plant is classified as a medium-to-large agglomeration under EU regulations. As a Spanish facility, the plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations with a population equivalent (PE) between 10,000 and 150,000. For larger agglomerations or discharges to sensitive areas, tertiary treatment may be required. The regulatory framework ensures compliance with European standards. The plant discharges treated wastewater into the local water system, which ultimately drains into the Ebro River basin. The Ebro River flows eastward into the Mediterranean Sea, supporting diverse aquatic life and agricultural activities along its course. The plant plays a key role in protecting water quality in this important river basin.
Environmental context
The Calahorra wastewater treatment plant discharges into the Ebro River basin, which flows into the Mediterranean Sea. The Ebro is one of Spain's largest rivers, supporting a variety of aquatic species and providing water for irrigation and industry. The plant's operations help maintain water quality in this ecologically significant basin, which is also important for migratory birds and local biodiversity.
Frequently asked questions
The Calahorra wastewater treatment plant is located in Calahorra, in the autonomous community of La Rioja, Spain. The plant serves the municipality and surrounding areas.
The plant serves approximately 85,873 people, classifying it as a medium-to-large agglomeration under EU regulations.
The plant discharges into the Ebro River basin, which flows into the Mediterranean Sea. It helps protect water quality in the Ebro, one of Spain's major rivers.
The plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size. The directive aims to protect the environment from the adverse effects of wastewater discharges.
In Spain, plants serving around 85,000 people typically provide at least secondary treatment, as mandated by the EU directive. Some plants may also include tertiary treatment if discharging to sensitive areas.
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