Rinconada Wastewater Treatment Plant, Acapulco, Guerrero, Mexico

Rinconada is a wastewater treatment plant located in the Progreso neighborhood of Acapulco, in the state of Guerrero, Mexico. The plant serves an estimated population of 13,691, placing it in the small to medium agglomeration category for Mexican wastewater infrastructure. Acapulco is a major coastal city on the Pacific Ocean, and the plant's proximity to the coast influences its environmental significance. As a Mexican wastewater facility, Rinconada operates under the national regulatory framework established by the Ley de Aguas Nacionales and the Normas Oficiales Mexicanas (NOMs), particularly NOM-001-SEMARNAT-1996 which sets limits for pollutants in treated wastewater discharged to national waters. The plant's treated effluent ultimately discharges into the Pacific Ocean via local drainage systems and streams in the Acapulco area. The coastal waters of Guerrero support diverse marine ecosystems, including coral reefs and mangrove lagoons, which are sensitive to nutrient loading and contaminants from urban runoff and wastewater. Proper treatment at plants like Rinconada is critical to protecting these coastal habitats and maintaining water quality for tourism and fisheries.

The Rinconada plant discharges into the Pacific Ocean near Acapulco Bay, a major tourist destination. The receiving waters are part of the Guerrero coastal ecosystem, which includes mangrove forests and coral reefs that provide critical habitat for fish, crustaceans, and migratory birds. Nutrient pollution from wastewater can lead to eutrophication and algal blooms, threatening these sensitive marine environments. The plant's location within 50 km of the coast underscores the importance of effective treatment to minimize ecological impact on the nearshore zone.