Tercera Manzana Poniente Wastewater Treatment Plant, Jiquipilco, Estado de México

Tercera Manzana Poniente is a municipal wastewater treatment plant located in the community of Manzana Tercera De Santa Cruz Tepexpan, within the municipality of Jiquipilco, Estado de México, Mexico. The plant serves a population of approximately 2,738 people, classifying it as a small-scale facility under Mexican wastewater regulations. The plant provides secondary treatment, which is the standard level required by Mexican law (NOM-001-SEMARNAT-1996) for discharges into inland water bodies. With a designed capacity of 604.8 m³/day and an actual discharge volume of 259.2 m³/day, the plant operates well below its capacity, indicating potential for future growth or seasonal variability. The treated effluent is discharged into local streams that eventually drain into the Lerma River basin, a critical water source for central Mexico. The Lerma River flows into Lake Chapala, Mexico's largest freshwater lake, which supports diverse aquatic life and provides water for agriculture and human consumption. Proper treatment at plants like Tercera Manzana Poniente helps protect downstream ecosystems and water quality.

The plant discharges into the Lerma River basin, which flows into Lake Chapala, the largest freshwater lake in Mexico. This watershed supports a variety of aquatic species and is an important resource for irrigation and drinking water. The region's semi-arid climate makes water quality management crucial for maintaining ecological balance and human use.