ORIHUELA LA APARECIDA Wastewater Treatment Plant, Orihuela, Spain

ORIHUELA LA APARECIDA is a wastewater treatment plant located in the La Aparecida area of Orihuela, within the Comunitat Valenciana region of Spain. The plant served the local community and was designed with a capacity of 1,833 cubic meters per day, reflecting its role in managing municipal wastewater for this part of the Vega Baja del Segura comarca. As a secondary treatment facility, the plant provided biological treatment to reduce organic matter and suspended solids before discharge. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), secondary treatment is the standard requirement for inland freshwater discharges, ensuring compliance with European environmental standards for water quality. The plant's treated effluent would have been discharged into the local drainage network, ultimately flowing into the Segura River. The Segura River basin is ecologically significant, supporting irrigated agriculture and wetlands such as the Salinas de Santa Pola and the Guardamar del Segura coastal lagoon, which are important habitats for migratory birds and aquatic species.

The plant is located inland in the Segura River basin, which drains into the Mediterranean Sea via the Guardamar del Segura estuary. The Segura River supports a semi-arid region reliant on irrigation, and its lower reaches host ecologically sensitive wetlands that provide critical habitat for waterbirds and fish. The plant's secondary treatment helped protect these downstream ecosystems from nutrient pollution and organic loading.