Atarasquillo Santa Maria Wastewater Treatment Plant, Santa Maria Atarasquillo, Estado de Mexico

Atarasquillo Santa Maria is a municipal wastewater treatment plant located in Santa Maria Atarasquillo, Lerma, Estado de Mexico, Mexico. It serves a population of 3,103 and operates with secondary treatment, a standard level for small communities in Mexico. The plant has a designed capacity of 3,024.00 m³/day and currently discharges 293.76 m³/day of treated wastewater. Under Mexican regulations (NOM-001-SEMARNAT-1996), secondary treatment is required for discharges into national waters, ensuring compliance with basic pollutant removal standards. The treated effluent is discharged into local water bodies that ultimately drain into the Lerma River basin, a major hydrological system in central Mexico. The Lerma River flows into Lake Chapala, the largest freshwater lake in Mexico, which supports diverse aquatic life and provides water for agriculture and human consumption.

The plant discharges into the Lerma River basin, which flows into Lake Chapala, a critical freshwater resource in central Mexico. The lake supports a variety of fish species and migratory birds, making it an ecologically sensitive area. Proper wastewater treatment is essential to prevent nutrient loading and protect downstream water quality.