Fraccionamiento Hermosillo Wastewater Treatment Plant, Tapachula, Chiapas

Fraccionamiento Hermosillo is a wastewater treatment plant located in the Hermosillo neighborhood of Tapachula, in the state of Chiapas, Mexico. The plant serves a small population of 566 people and is part of the municipal wastewater infrastructure for the Tapachula area. The plant provides secondary treatment, which is the standard level required under Mexican regulations (NOM-001-SEMARNAT) for municipal wastewater before discharge. With a designed capacity of 179.71 m³/day and a current discharge volume of 53.57 m³/day, the plant operates below its capacity, indicating room for future growth or seasonal variations. The treated effluent is discharged into local water bodies that eventually drain into the Pacific Ocean via the Coatán River or other nearby coastal systems. The region's tropical climate and proximity to the Pacific make proper wastewater treatment essential for protecting downstream aquatic ecosystems and coastal water quality.

The plant discharges into local waterways that flow toward the Pacific coast of Chiapas. The region's watershed includes the Coatán River and other small coastal rivers that support diverse aquatic life and are important for local fisheries. Proper secondary treatment helps reduce organic load and pathogens, protecting downstream ecosystems and the coastal marine environment from eutrophication and contamination.