Zona Militar Wastewater Treatment Plant, Guadalupe, Zacatecas, Mexico

Zona Militar is a wastewater treatment plant located in Guadalupe, within the state of Zacatecas, Mexico. The facility serves a small population of around 1,460 people, reflecting its role in managing domestic wastewater from a localized area. As a secondary treatment plant, it provides biological treatment to reduce organic pollutants and suspended solids before discharge. The plant operates with a designed capacity of 155.52 cubic meters per day and currently treats a discharge volume of 138.24 cubic meters per day. In Mexico, wastewater treatment plants of this scale are regulated under the National Water Law (Ley de Aguas Nacionales) and must comply with official Mexican standards (NOM-001-SEMARNAT-1996) for effluent quality. Secondary treatment is the minimum required for most municipal discharges to protect receiving water bodies. The treated effluent from Zona Militar is discharged into the local watershed, which ultimately drains into the Pacific Ocean via the Río Grande de Santiago system. The region's semi-arid climate means that water resources are particularly sensitive, and proper treatment helps preserve water quality for downstream communities and ecosystems. The plant contributes to reducing pollution loads in the basin, supporting both environmental health and water reuse potential.

The plant discharges into the Río Grande de Santiago basin, which flows through Zacatecas and Jalisco before reaching the Pacific Ocean. This watershed supports diverse aquatic life and provides water for agriculture and human consumption. The semi-arid climate makes the region's water resources vulnerable to pollution, so effective secondary treatment is crucial for maintaining ecological balance and protecting downstream water quality.