Segunda Manzana Oriente Wastewater Treatment Plant, Manzana Tercera De Santa Cruz Tepexpan, Estado de México

Segunda Manzana Oriente is a 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 3,195 people, reflecting its role in managing domestic wastewater for this small agglomeration. The plant employs secondary treatment, which is the standard biological treatment required under Mexican regulations (NOM-001-SEMARNAT-1996) for municipal wastewater. With a designed capacity of 604.80 m³/day and a current discharge volume of 302.40 m³/day, the plant operates at about 50% capacity, indicating room for future growth or seasonal variations. The treated effluent is discharged into the local watershed, which ultimately drains into the Lerma River basin. The Lerma River is a critical water source for central Mexico, supporting agriculture, industry, and ecosystems. Proper treatment at this plant helps protect downstream water quality in the Lerma-Chapala basin, which flows into Lake Chapala, Mexico's largest freshwater lake.

The plant discharges into the Lerma River basin, which flows into Lake Chapala, a vital freshwater resource for the region. The watershed supports diverse aquatic life and provides water for irrigation and human consumption. Secondary treatment reduces organic pollutants and suspended solids, helping to maintain ecological balance in the downstream environment.