Overview
URDUNA wastewater treatment plant serves the municipality of Urduña/Orduña in Euskadi, Spain, with a population of approximately 5,058. The plant has a designed capacity of 1.00 volume units and operates under Spain's implementation of the EU Urban W
URDUNA is a wastewater treatment plant located in Lekamaña, Amurrio, within the municipality of Urduña/Orduña in the province of Bizkaia, Euskadi, Spain. It serves a population of about 5,058 people, classifying it as a small agglomeration under EU regulations. As a Spanish facility, URDUNA operates under the national transposition of the EU Urban Waste Water Treatment Directive (91/271/EEC). For agglomerations of this size (under 10,000 population equivalent), the directive requires appropriate treatment, typically secondary treatment, to protect receiving waters. The plant's designed capacity is 1.00 volume units, indicating its scale. The treated effluent from URDUNA is discharged into the local watershed, which ultimately drains into the Bay of Biscay via the Nervión River system. The surrounding region of Euskadi features a humid oceanic climate and diverse aquatic habitats, making proper wastewater treatment essential for maintaining water quality and supporting downstream ecosystems.
Environmental context
The plant's discharge enters the Nervión River basin, which flows through the Basque Country and empties into the Bay of Biscay (Atlantic Ocean). This coastal region supports diverse marine life and is important for local fisheries. The watershed includes areas of ecological sensitivity, and effective treatment helps prevent nutrient enrichment and protect downstream aquatic habitats.
Frequently asked questions
The URDUNA wastewater treatment plant is located in Lekamaña, Amurrio, within the municipality of Urduña/Orduña, in the province of Bizkaia, Euskadi, Spain.
The URDUNA plant serves a population of approximately 5,058 people, classifying it as a small agglomeration under EU wastewater treatment regulations.
The treated effluent from URDUNA is discharged into the local watershed, which is part of the Nervión River basin. This river system flows through the Basque Country and ultimately reaches the Bay of Biscay in the Atlantic Ocean.
URDUNA operates under Spain's implementation of the EU Urban Waste Water Treatment Directive (91/271/EEC). For agglomerations under 10,000 population equivalent, the directive requires appropriate treatment, typically secondary treatment, to protect receiving water bodies.
In Spain, wastewater treatment plants serving around 5,000 people are classified as small agglomerations. Under the EU Urban Waste Water Treatment Directive, such plants are generally required to provide secondary treatment (biological treatment) to reduce organic matter and suspended solids before discharge.
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