Honorable Colegio Militar Wastewater Treatment Plant, Ciudad de México, Mexico

Honorable Colegio Militar is a wastewater treatment plant located in the Tlalpan borough of Ciudad de México, Mexico. The facility serves a population of approximately 23,731 residents, contributing to the city's extensive wastewater infrastructure that manages flows from one of the world's largest metropolitan areas. As a plant serving a medium-sized agglomeration, it is subject to Mexico's official standard NOM-001-SEMARNAT, which sets maximum permissible limits for pollutants in treated wastewater discharged into national waters. Plants of this scale typically employ secondary biological treatment to meet regulatory requirements for organic matter and suspended solids removal. The treated effluent from this facility ultimately drains into the Valley of Mexico basin, which historically discharged into the Pánuco River system and eventually to the Gulf of Mexico. The plant plays a role in protecting local water bodies from untreated sewage, supporting water quality in the region's complex hydrological network.

The plant's discharge contributes to the Valley of Mexico's drainage system, which flows through the Tula River and into the Pánuco River, reaching the Gulf of Mexico. This watershed supports diverse aquatic life and provides water for agricultural and industrial use downstream. Effective treatment is critical to prevent eutrophication and protect the ecological health of these water bodies.