San Bartolome Cuahuixmatla Wastewater Treatment Plant, Tlaxcala, Mexico

San Bartolome Cuahuixmatla is a municipal wastewater treatment plant located in the town of San Bartolomé Cuahuixmatlac, within the municipality of Chiautempan, Tlaxcala, Mexico. The plant serves a population of approximately 2,738 residents and is part of the local sanitation infrastructure for this inland community. The facility provides secondary treatment, which is the standard biological treatment level required under Mexican regulations (NOM-001-SEMARNAT-1996) for municipal wastewater. The plant has a designed capacity of 604.80 m³/day and currently treats an average discharge volume of 259.20 m³/day, indicating operational capacity well below its design limit. The treated effluent is discharged into the local watershed, which ultimately drains into the Balsas River basin, one of Mexico's major hydrological systems. The Balsas River flows southwest to the Pacific Ocean, supporting diverse aquatic life and agricultural activities along its course. The plant's secondary treatment helps protect downstream water quality in this ecologically important basin.

The plant discharges into the Balsas River basin, which drains into the Pacific Ocean via the Balsas River. This watershed supports a variety of freshwater species and is used for irrigation and domestic water supply. Secondary treatment reduces organic pollutants and suspended solids, helping to maintain the ecological health of the river system and downstream coastal waters.