Intermunicipal Ixtapan Tonatico Wastewater Treatment Plant, Ixtapan de la Sal, Estado de México

Intermunicipal Ixtapan Tonatico is a wastewater treatment plant located in Ixtapan de la Sal, Estado de México, Mexico. The facility serves a population of approximately 16,538 people, placing it in the small-to-medium agglomeration category for Mexican wastewater infrastructure. As a plant in Mexico, it operates under the national water regulations enforced by CONAGUA (Comisión Nacional del Agua), which mandate treatment standards for municipal wastewater. For communities of this size, secondary treatment is typically required to reduce organic pollutants and suspended solids before discharge. The plant discharges treated effluent into local watercourses that ultimately drain into the Balsas River basin, one of Mexico's major hydrological regions. The surrounding area is characterized by mountainous terrain and seasonal rainfall, making proper wastewater treatment essential for protecting downstream water quality and aquatic habitats.

The plant's treated effluent flows into tributaries of the Balsas River, which drains into the Pacific Ocean via the Balsas River delta. This watershed supports diverse aquatic life and provides water for agriculture and communities downstream. The region's seasonal rainfall patterns mean that dry-season flows rely heavily on treated wastewater, making effective treatment critical for maintaining ecological balance.