AGUILAR DEL RIO ALHAMA Wastewater Treatment Plant, La Rioja, Spain

AGUILAR DEL RIO ALHAMA is a wastewater treatment plant located in Aguilar del Río Alhama, La Rioja, Spain. The facility serves a population of approximately 2,000 residents and operates with a designed capacity of 2,100 cubic meters per day. It is situated along the road connecting Aguilar del Río Alhama to Cervera del Río Alhama, near the locality of Inestrillas. The plant provides secondary treatment, which is the standard biological treatment required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. The directive mandates secondary treatment for all discharges from agglomerations with a population equivalent greater than 2,000, ensuring that organic matter and suspended solids are effectively reduced before discharge. The treated effluent is discharged into the local water environment, which ultimately drains into the Alhama River, a tributary of the Ebro River. The Ebro River basin is one of the largest in Spain, supporting diverse aquatic ecosystems and agricultural activities downstream. The plant's operation helps protect the water quality of the Alhama River and contributes to the ecological health of the Ebro basin.

The plant discharges into the Alhama River, which flows into the Ebro River, the largest river in Spain by volume. The Ebro River basin supports a variety of aquatic habitats and is important for irrigation and biodiversity. The treatment plant helps reduce nutrient and organic pollution, protecting downstream ecosystems and water quality in the Ebro Delta, a region of ecological significance.