ALBALATE DEL ARZOBISPO Wastewater Treatment Plant, Bajo Martín, Aragón, Spain

ALBALATE DEL ARZOBISPO wastewater treatment plant is located in the Bajo Martín comarca of Aragón, Spain, serving a population of approximately 3,595 residents. The plant operates as a secondary treatment facility, a standard for small agglomerations under Spanish and EU regulations. With a designed capacity of 4,300 m³/day and an actual discharge volume of 651.58 m³/day, the plant operates well below its capacity, indicating room for future growth. As a secondary treatment plant, it meets the requirements of the EU Urban Waste Water Treatment Directive (91/271/EEC) for inland communities of this size. The treated effluent is discharged into local streams that flow into the Martín River, a tributary of the Ebro River, which ultimately reaches the Mediterranean Sea. The plant plays a key role in protecting the Ebro basin's water quality and supporting downstream aquatic ecosystems.

The plant discharges into the Martín River basin, part of the larger Ebro River watershed, which drains into the Mediterranean Sea. The Ebro delta is an ecologically sensitive area supporting diverse aquatic life and important migratory bird populations. Secondary treatment helps reduce organic pollution and nutrient loads, safeguarding water quality in the river and downstream coastal environment.