Fraccionamiento Blancas Mariposas Wastewater Treatment Plant, Villahermosa, Tabasco

Fraccionamiento Blancas Mariposas is a wastewater treatment plant located in the Santos Degollado area of Villahermosa, Tabasco, Mexico. The plant serves a population of approximately 5,933 residents, classifying it as a small to medium-sized facility within the region's municipal wastewater infrastructure. The plant employs secondary treatment processes, which is the standard level required under Mexican regulations (NOM-001-SEMARNAT-1996) for discharges into water bodies. With a designed capacity of 864.00 m³/day and an actual discharge volume of 561.60 m³/day, the plant operates below its full capacity, indicating room for future growth or seasonal variations. The treated effluent is discharged into local watercourses that ultimately drain into the Grijalva River basin, one of Mexico's most significant hydrological systems. The Grijalva River flows into the Gulf of Mexico, supporting diverse aquatic ecosystems and providing water for agriculture and communities downstream. The plant's secondary treatment helps reduce organic pollutants and suspended solids, protecting the ecological health of the receiving waters.

The plant discharges into the Grijalva River basin, which flows through the state of Tabasco and empties into the Gulf of Mexico. This watershed is ecologically important, supporting wetlands, mangroves, and diverse fish species. The secondary treatment process reduces biochemical oxygen demand and total suspended solids, mitigating eutrophication risks in downstream coastal areas. The region's tropical climate and seasonal flooding patterns necessitate robust treatment to handle variable flows.