Poblado Playa Larga Wastewater Treatment Plant, Tabasco, Mexico

Poblado Playa Larga is a wastewater treatment plant serving the community of Playa Larga in the municipality of Jonuta, Tabasco, Mexico. The plant provides secondary treatment for a population of 1,475, making it a small-scale facility within the region's wastewater infrastructure. The plant has a designed capacity of 259.20 m³/day and currently treats a daily volume of 207.36 m³/day. As a secondary treatment facility, it meets the standard level of treatment required for municipal wastewater in Mexico under the country's environmental regulations (NOM-001-SEMARNAT), which set discharge limits for organic matter and solids. The treated effluent from the plant is discharged into local water bodies that ultimately drain into the Grijalva River basin, one of Mexico's major hydrological systems. The Grijalva River flows through Tabasco and into the Gulf of Mexico, supporting diverse aquatic ecosystems and providing water for agriculture and communities downstream.

The plant discharges into the Grijalva River basin, which flows through the low-lying, floodplain region of Tabasco before reaching the Gulf of Mexico. This watershed supports important wetland ecosystems and mangrove forests along the coast, which serve as critical habitat for fish, crustaceans, and migratory birds. The secondary treatment provided by the plant helps reduce organic pollution loads entering these sensitive downstream environments.