San Miguel La Presa Wastewater Treatment Plant, Tlaxcala, Mexico

San Miguel La Presa is a municipal wastewater treatment plant located in San Miguel la Presa, Ixtacuixtla de Mariano Matamoros, Tlaxcala, Mexico. The plant serves a small community of 456 people, reflecting its role in managing local domestic wastewater in a rural or peri-urban setting. The plant provides secondary treatment, a standard biological process that removes organic matter and suspended solids. With a designed capacity of 86.40 units and a current discharge volume of 43.20 units, the plant operates at roughly half its capacity. Under Mexican regulations (NOM-001-SEMARNAT-1996 and subsequent updates), secondary treatment is typical for plants of this scale, ensuring compliance with discharge limits for receiving waters. The treated effluent is discharged into local water bodies that ultimately drain into the Gulf of Mexico via the Pánuco River basin. The surrounding region in Tlaxcala is part of the Central Highlands, where water resources are critical for agriculture and domestic use. Proper treatment helps protect downstream ecosystems and communities.

The plant's effluent enters local streams that feed into the Pánuco River basin, which flows eastward to the Gulf of Mexico. This watershed supports diverse aquatic life and provides water for irrigation and human consumption in the region. The secondary treatment process reduces organic pollutants, helping to maintain water quality in a semi-arid highland environment where water resources are seasonally stressed.