CALAMOCHA Wastewater Treatment Plant, Calamocha, Aragón, Spain

The CALAMOCHA wastewater treatment plant is located in Calamocha, a town in the Jiloca region of Aragón, Spain. It serves a population equivalent of 11,392, placing it in the medium agglomeration category under EU classification. The plant is situated inland, away from coastal areas, and discharges into the local watershed. As a Spanish facility, the plant operates under the national transposition of the EU Urban Waste Water Treatment Directive (91/271/EEC). For agglomerations of this size (between 10,000 and 15,000 population equivalent), the directive requires secondary treatment as a minimum, with more stringent requirements if the receiving waters are designated as sensitive areas. The regulatory framework ensures compliance with European standards. The plant's treated effluent likely enters the Jiloca River, a tributary of the Ebro River basin. The Ebro River flows into the Mediterranean Sea via the Ebro Delta, an ecologically important area that supports diverse aquatic life and migratory bird populations. The plant plays a key role in protecting the water quality of this river system and the downstream environment.

The CALAMOCHA plant discharges into the Jiloca River, which flows into the Ebro River, ultimately reaching the Mediterranean Sea via the Ebro Delta. The Ebro Delta is an ecologically sensitive area that supports diverse aquatic life and serves as an important migratory corridor for birds. The plant's treatment helps maintain water quality in this river system, reducing nutrient and pollutant loads that could impact downstream ecosystems.