Luis Donaldo Colosio Wastewater Treatment Plant, Acapulco, Guerrero, Mexico

Luis Donaldo Colosio is a wastewater treatment plant located in Acapulco, Guerrero, Mexico, serving a population of about 15,516 people. The plant is situated in the Progreso neighborhood of Acapulco de Juárez, a major coastal city on the Pacific Ocean. As a municipal facility in Mexico, the plant operates under the national water regulatory framework administered by CONAGUA (Comisión Nacional del Agua). For a plant serving a medium-sized agglomeration of around 15,000 people, Mexican regulations typically require secondary treatment to meet discharge standards for organic matter and suspended solids. The plant's treated effluent ultimately reaches the Pacific Ocean via local drainage systems. Acapulco's coastal waters support diverse marine life and are important for tourism and fisheries. Proper wastewater treatment is critical to protect water quality in the bay and adjacent coastal areas from nutrient pollution and pathogens.

The plant discharges into the Pacific Ocean near Acapulco Bay, a semi-enclosed coastal embayment that supports coral reefs, mangroves, and seagrass beds. These habitats provide nursery grounds for fish and shellfish and are vital for local biodiversity. The bay also receives runoff from the surrounding Sierra Madre del Sur mountains, and nutrient loading from untreated or poorly treated wastewater can lead to eutrophication and harmful algal blooms, impacting both ecosystem health and the region's tourism-dependent economy.