Locumbilla Wastewater Treatment Plant, Moquegua, Peru

Locumbilla is a wastewater treatment plant located in the Belen area of Moquegua, Peru, within the Mariscal Nieto province. It serves a population of approximately 5,241 people, making it a small-scale municipal facility. The plant is situated in an inland region of southern Peru, characterized by arid coastal valleys and mountainous terrain. The plant provides secondary treatment, which is a biological process that significantly reduces organic matter and suspended solids. Secondary treatment is the standard for small agglomerations under Peruvian regulations, which align with international norms for protecting water quality. The plant's discharge volume is 432 cubic meters per day, indicating consistent operation. The treated effluent is released into the local watershed, which ultimately drains into the Pacific Ocean via the Moquegua River basin. This discharge supports the ecological balance of the river system, which is vital for local agriculture and biodiversity. The plant plays a key role in preventing untreated wastewater from impacting downstream communities and ecosystems.

The plant discharges into the Moquegua River basin, which flows through an arid coastal valley before reaching the Pacific Ocean. This watershed supports limited but ecologically important aquatic life, including native fish species adapted to seasonal flows. The region's dry climate makes water quality management critical for sustaining both human use and environmental health downstream.