Lomitas Wastewater Treatment Plant, Tabasco, Mexico

Lomitas is a wastewater treatment plant located in the town of Lomitas, within the municipality of Nacajuca, Tabasco, Mexico. The plant serves a population of approximately 4,107 residents, providing essential sanitation services for this community in the southeastern region of the country. The plant operates with secondary treatment, which is the standard biological treatment process that removes organic matter and suspended solids. With a designed capacity of 864.00 cubic meters per day and an actual discharge volume of 388.80 cubic meters per day, the plant operates below its capacity. Under Mexican regulations (NOM-001-SEMARNAT-1996 and subsequent updates), secondary treatment is required for municipal wastewater discharges to protect water quality. The treated effluent from Lomitas is discharged into local water bodies that ultimately drain into the Grijalva River basin, one of Mexico's most significant hydrological systems. This river system flows into the Gulf of Mexico, supporting diverse aquatic ecosystems and providing water resources for agriculture and communities downstream. The plant plays a key role in reducing pollution loads to these sensitive waters.

The Lomitas plant discharges into the Grijalva River basin, which drains into the Gulf of Mexico. This watershed supports important mangrove forests and coastal wetlands that provide critical habitat for fish, birds, and other wildlife. The region's tropical climate and seasonal flooding make proper wastewater treatment essential for maintaining water quality and ecosystem health in downstream areas.