Monte Grande Wastewater Treatment Plant - Tabasco, Mexico

Monte Grande is a municipal wastewater treatment plant located in the town of Monte Grande, Jonuta, in the state of Tabasco, Mexico. It serves a population of approximately 2,181 residents, providing essential sanitation infrastructure for this inland community. The plant employs secondary treatment, a standard biological process that removes organic matter and suspended solids. With a design capacity of 432.00 units and an average daily discharge of 324.00 units, it operates at about 75% capacity. As a Mexican facility, it falls under national water quality regulations administered by CONAGUA (Comisión Nacional del Agua), which sets discharge standards to protect water resources. The treated effluent is discharged into local waterways that ultimately drain into the Grijalva River basin, one of Mexico's most significant hydrological systems. This river flows northward into the Gulf of Mexico, supporting diverse aquatic ecosystems and providing water for agriculture and communities downstream. The plant's secondary treatment helps reduce pollution loads entering this important watershed.

The plant's discharge enters the Grijalva River basin, which flows through the low-lying, humid tropical region of Tabasco before reaching the Gulf of Mexico. This watershed supports extensive wetlands and mangrove forests that provide critical habitat for fish, birds, and other wildlife. The secondary treatment process reduces organic pollutants, helping to maintain water quality in this ecologically sensitive area that is vital for local fisheries and flood control.