Unidad Habitacional El Coyol Wastewater Treatment Plant, Xalapa, Veracruz

Unidad Habitacional El Coyol is a secondary wastewater treatment plant located in Xalapa, the capital city of Veracruz, Mexico. The plant serves a population of 2,738 residents within the urban area, contributing to local sanitation infrastructure. The plant operates with secondary treatment, which is the standard level required under Mexican regulations (NOM-001-SEMARNAT) for municipal wastewater before discharge into water bodies. It has a designed capacity of 432.00 cubic meters per day and currently treats 259.20 cubic meters daily, indicating operational capacity below design levels. The treated effluent is discharged into local waterways that ultimately drain into the Gulf of Mexico. This discharge supports the ecological health of downstream aquatic environments, including rivers and coastal zones, by reducing pollutant loads from urban runoff and domestic wastewater.

The plant discharges into the drainage basin of the Gulf of Mexico, likely via the Actopan River or nearby tributaries. The region's tropical climate and proximity to the coast make the receiving waters ecologically sensitive, supporting diverse aquatic life and mangrove ecosystems. Proper treatment helps protect downstream habitats from nutrient pollution and pathogens.