Camotlán de Miraflores II Wastewater Treatment Plant, Colima, Mexico

Camotlán de Miraflores II is a wastewater treatment plant located in the town of Camotlán de Miraflores, within the municipality of Manzanillo, Colima, Mexico. The plant serves a small population of 548 residents, reflecting its role in a rural or peri-urban community. Its location near the Pacific coast places it in an environmentally sensitive zone where proper wastewater management is critical. The plant provides secondary treatment, which is the standard biological process for removing organic matter and suspended solids. Although the designed capacity is 345.60 m³/day, the current discharge volume is 51.84 m³/day, indicating that the plant operates well below its capacity. Under Mexican regulations (NOM-001-SEMARNAT-1996 and subsequent updates), secondary treatment is required for discharges into coastal waters, and this plant meets that standard. The treated effluent is discharged into the local watershed, which ultimately drains into the Pacific Ocean. The coastal environment supports diverse marine life, including mangroves and estuaries that are important for fisheries and biodiversity. Proper treatment helps protect these ecosystems from nutrient pollution and pathogens, ensuring the health of downstream water bodies and the coastal zone.

The plant discharges into the Pacific coastal watershed near Manzanillo, Colima. The receiving waters flow into the Pacific Ocean, which supports ecologically sensitive habitats such as mangroves and estuaries. These areas provide critical nursery grounds for fish and shellfish, and are important for migratory birds. Effective wastewater treatment is essential to prevent eutrophication and protect marine biodiversity in this coastal region.