LETUR Wastewater Treatment Plant, Letur, Castilla-La Mancha, Spain

LETUR is a wastewater treatment plant located in Letur, a municipality in the province of Albacete, Castilla-La Mancha, Spain. The plant serves a population of approximately 2,225 residents, reflecting its role as a small-scale facility in a rural inland setting. It operates under Spain's implementation of the EU Urban Waste Water Treatment Directive (91/271/EEC), which sets standards for collection and treatment based on agglomeration size. The plant employs advanced treatment processes, which go beyond the secondary treatment required by EU directives for agglomerations of this size. Advanced treatment typically includes nutrient removal (nitrogen and phosphorus) to protect sensitive receiving waters. The plant's discharge volume is 458 cubic meters per day, indicating a capacity aligned with the small population served. Treated effluent from LETUR is discharged into local watercourses that ultimately drain into the Segura River basin, which flows into the Mediterranean Sea. The plant's advanced treatment helps protect downstream aquatic ecosystems, including the Segura River and its associated wetlands, which support diverse wildlife and are important for regional biodiversity.

LETUR's treated effluent enters local streams that feed into the Segura River basin, which flows southeast into the Mediterranean Sea. The Segura River supports irrigated agriculture and provides habitat for native fish species such as the Iberian barbel and chub. Advanced treatment at LETUR reduces nutrient loads, helping to prevent eutrophication in downstream reservoirs and coastal waters.