Ejido Jobal Wastewater Treatment Plant, Chablé, Tabasco, Mexico

Ejido Jobal is a wastewater treatment plant located in Chablé, within the municipality of Emiliano Zapata, Tabasco, Mexico. The plant serves a small community of 936 residents, providing essential sanitation infrastructure for this rural area in the southeastern region of the country. The plant operates with secondary treatment, which is a standard biological process that removes organic matter and suspended solids. With a designed capacity of 88.99 volume units and a discharge volume matching that figure, the facility is sized to handle the wastewater generated by the local population. Under Mexican regulations (NOM-001-SEMARNAT-1996), secondary treatment is required for discharges into national waters, ensuring compliance with national water quality standards. The treated effluent is discharged into local water bodies that ultimately drain into the Grijalva River basin, one of Mexico's major hydrological systems. This river system flows northward into the Gulf of Mexico, supporting diverse aquatic ecosystems and providing water resources for agriculture and communities downstream. The plant's operation helps protect these waters from untreated sewage contamination.

The plant discharges into the Grijalva River basin, which flows through the state of Tabasco and empties into the Gulf of Mexico. This watershed supports important wetland ecosystems, including freshwater marshes and coastal lagoons that provide habitat for fish, birds, and other wildlife. The secondary treatment process reduces organic pollutants, helping to maintain water quality in the river and downstream coastal environment.