CHULILLA Wastewater Treatment Plant, Chulilla, Comunitat Valenciana

The CHULILLA wastewater treatment plant is located in the municipality of Chulilla, within the La Serranía comarca of Valencia province, Comunitat Valenciana, Spain. It serves a population of approximately 4,634 residents, classifying it as a small agglomeration under EU classification. The plant operates with secondary treatment, which is the standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for inland freshwater discharges from agglomerations of this size. The designed capacity is 2,000 m³/day, and the current discharge volume is 252.62 m³/day, indicating operational capacity well within design limits. The treated effluent is discharged into the local hydrological network, which ultimately drains into the Mediterranean Sea via the Turia River basin. The plant plays a key role in protecting the Turia River and its downstream ecosystems from nutrient pollution and organic load, supporting water quality standards in the region.

The plant discharges into the Turia River basin, which flows eastward through Valencia province and empties into the Mediterranean Sea near the city of Valencia. The Turia River supports diverse aquatic life and is an important ecological corridor in the region. The secondary treatment provided helps reduce organic matter and suspended solids, mitigating eutrophication risks in the coastal waters of the Mediterranean.