Sant Jaume dels Domenys Cornudella Wastewater Treatment Plant, Catalunya, Spain

Sant Jaume dels Domenys Cornudella is a municipal wastewater treatment plant located in Sant Jaume dels Domenys, a town in the Baix Penedès region of Tarragona, Catalunya, Spain. The plant serves a population of approximately 1,382 residents and operates under Spain's implementation of the EU Urban Waste Water Treatment Directive (91/271/EEC). As a small agglomeration, it is subject to requirements for secondary treatment to protect the receiving environment. The plant provides secondary treatment, which typically involves biological processes to reduce organic matter and suspended solids. With a designed capacity of 4,666 m³/day and an average discharge volume of 230.96 m³/day, the facility operates well within its capacity. The treatment process meets the standards set by Spanish regulations for small communities, ensuring compliance with EU directives for inland and coastal waters. The treated effluent is discharged into the local hydrological network, which ultimately drains into the Mediterranean Sea. The plant's proximity to the coast (within 10 km) means its discharge can affect coastal water quality. The surrounding area includes agricultural land and small watercourses that feed into the Mediterranean, supporting diverse aquatic life and requiring careful management to prevent nutrient enrichment.

The plant discharges into local streams that flow toward the Mediterranean Sea, part of the Catalan coastal basin. The receiving waters support a variety of marine and freshwater species, and the coastal zone is ecologically sensitive due to tourism and fisheries. Proper treatment helps prevent eutrophication and protects bathing water quality along the nearby Costa Dorada.