Lo de Marcos Wastewater Treatment Plant - Nayarit, Mexico

Lo de Marcos is a municipal wastewater treatment plant located in the town of Lo de Marcos, within the municipality of Bahía de Banderas, Nayarit, Mexico. The plant serves a population of approximately 4,211 residents and operates with a designed capacity of 1,036.80 m³/day, currently treating 864.00 m³/day of wastewater. The plant provides secondary treatment, which is the standard level required under Mexican regulations (NOM-001-SEMARNAT-1996) for discharges to coastal waters. As a facility serving a small agglomeration, it meets the national treatment expectations for protecting public health and the environment. The treated effluent is discharged into the Pacific Ocean via the coastal environment of Bahía de Banderas. This bay is an ecologically important area that supports diverse marine life, including sea turtles and migratory fish species. The plant's operation helps reduce pollution loads reaching the bay, contributing to the preservation of local water quality and coastal ecosystems.

The plant discharges into the Pacific Ocean through the coastal waters of Bahía de Banderas, a large bay on Mexico's Pacific coast. This bay is a critical habitat for marine biodiversity, including sea turtles, dolphins, and numerous fish species. The surrounding watershed drains from the Sierra Madre Occidental, and the bay's health is vital for local fisheries and tourism. Proper wastewater treatment is essential to prevent nutrient enrichment and pathogen contamination that could harm coral communities and seagrass beds in the area.