San Juan Ixhuatepec Wastewater Treatment Plant, Tlalnepantla, Mexico

San Juan Ixhuatepec is a wastewater treatment plant located in Tlalnepantla, within the Estado de México, part of the greater Mexico City metropolitan area. The facility serves an estimated population of 91,273, placing it in the medium-to-large agglomeration category for Mexican wastewater infrastructure. Its location in a densely urbanized region underscores its role in managing municipal sewage from residential and industrial sources. Under Mexican regulations (NOM-001-SEMARNAT-1996 and subsequent updates), wastewater treatment plants of this scale are required to meet specific discharge standards for organic matter, suspended solids, and pathogens. Plants serving populations over 50,000 typically employ secondary or advanced treatment to comply with federal norms. The plant's capacity and operational status are not publicly reported, but its continued function is critical for local sanitation. The treated effluent likely discharges into the Río de los Remedios or a tributary of the Río Moctezuma, which flows into the Pánuco River and eventually reaches the Gulf of Mexico. This watershed supports diverse aquatic life and provides water for agriculture and industry downstream. The plant's operation helps reduce pollution loads in this ecologically and economically important basin.

The plant's treated effluent enters the Río de los Remedios, a tributary of the Río Moctezuma, which flows into the Pánuco River and ultimately discharges into the Gulf of Mexico. This watershed supports diverse aquatic ecosystems, including fish and migratory bird habitats, and provides water for irrigation and industrial use in the region. Proper treatment is essential to prevent eutrophication and protect downstream water quality.