El Veinte Wastewater Treatment Plant - Esperanza Norte, Tabasco, Mexico

El Veinte is a wastewater treatment plant located in the rural community of Esperanza Norte (El 20), within the municipality of Tenosique, Tabasco, Mexico. The plant provides secondary treatment for a population of 298 residents, supporting local sanitation needs in this inland region of southeastern Mexico. The plant operates with a designed capacity of 259.20 cubic meters per day and currently processes 172.80 cubic meters per day, indicating operational capacity below its design level. As a secondary treatment facility, it employs biological processes to reduce organic pollutants and suspended solids, meeting standard Mexican wastewater treatment norms (NOM-001-SEMARNAT) for discharge into water bodies. The treated effluent from El Veinte is discharged into local waterways that drain into the Usumacinta River basin, one of Mexico's most significant hydrological systems. The Usumacinta River flows northward through Tabasco and ultimately reaches the Gulf of Mexico, supporting diverse aquatic ecosystems and providing water resources for communities downstream.

El Veinte discharges into the Usumacinta River basin, which is part of the larger Grijalva-Usumacinta hydrological system. This basin is ecologically significant, hosting diverse freshwater species and supporting wetlands that provide flood control and water purification. The river flows through the Selva Maya region, one of the most biodiverse areas in the Americas, before emptying into the Gulf of Mexico. Proper wastewater treatment is critical to protect these sensitive ecosystems from nutrient pollution and pathogens.