Fraccionamiento Los Robles 2 Wastewater Treatment Plant, Lerma de Villada, Estado de México

Fraccionamiento Los Robles 2 is a municipal wastewater treatment facility located in Lerma de Villada, within the Estado de México region of Mexico. The plant serves a population of approximately 4,564 residents, classifying it as a small-scale treatment facility in the context of Mexican wastewater infrastructure. The plant provides secondary treatment, a standard level that typically involves biological processes to reduce organic matter and suspended solids. With a designed capacity of 432 cubic meters per day and a discharge volume of 432 m³/day, the facility operates at full capacity. Under Mexican regulations (NOM-001-SEMARNAT-1996 and subsequent updates), secondary treatment is generally required for discharges into national waters, ensuring compliance with effluent quality standards. The treated effluent is discharged into the local watershed, which ultimately drains into the Lerma River basin. The Lerma River flows into Lake Chapala, Mexico's largest freshwater lake, and is a critical water resource for the region. The plant plays a role in protecting downstream water quality and supporting the ecological health of the Lerma-Chapala basin.

The plant discharges into the Lerma River basin, which flows into Lake Chapala, the largest freshwater lake in Mexico. This watershed supports diverse aquatic life and provides water for agriculture and human consumption. The Lerma-Chapala basin is ecologically sensitive due to historical pollution pressures, making effective wastewater treatment essential for maintaining water quality and ecosystem services.