Miramar Wastewater Treatment Plant, Manzanillo, Colima, Mexico

Miramar is a municipal wastewater treatment plant located in the Las Brisas neighborhood of Manzanillo, Colima, Mexico. The facility serves a population of approximately 3,286 people, classifying it as a small-scale treatment plant within the urban infrastructure of Manzanillo. The plant provides secondary treatment, which is the standard biological treatment process for municipal wastewater. With a designed capacity of 864 cubic meters per day and an actual discharge volume of 311.04 cubic meters per day, 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 to protect marine ecosystems. The plant is located within 10 kilometers of the Pacific coast, discharging treated effluent into the coastal waters near Manzanillo Bay. This area supports diverse marine life and is part of the larger Pacific Ocean ecosystem. The plant's operation helps protect local beaches and marine habitats from untreated wastewater pollution.

Miramar plant discharges into the Pacific Ocean via Manzanillo Bay, a coastal ecosystem that supports diverse marine species including sea turtles and migratory fish. The bay is an important economic and ecological zone for Colima state, with tourism and fishing industries relying on water quality. Secondary treatment reduces organic load and pathogens before discharge, helping to maintain coastal water quality standards.