Overview
El Rosario is a secondary wastewater treatment plant in Ciudad de México, Mexico, serving approximately 10,350 people. It discharges treated water into the inland drainage system of the Valley of Mexico.
El Rosario wastewater treatment plant is located in the Azcapotzalco borough of Ciudad de México, Mexico. It serves a population of around 10,350 residents, classifying it as a small to medium agglomeration within the metropolitan area. The plant provides secondary treatment, which is the standard biological treatment required under Mexican regulations (NOM-001-SEMARNAT) for municipal wastewater. With a designed capacity of 2,160 cubic meters per day and a current discharge volume of about 980 cubic meters per day, the plant operates well below its capacity, indicating potential for future growth or variable inflow. The treated effluent is discharged into the local drainage network, which ultimately flows into the Valley of Mexico's closed basin. This basin historically drained into Lake Texcoco but now relies on artificial canals and tunnels to prevent flooding. The plant plays a key role in protecting the region's water quality and public health.
Environmental context
El Rosario plant discharges into the inland drainage system of the Valley of Mexico, a high-altitude basin that lacks natural outflow. The basin's water bodies, including remnants of Lake Texcoco, are ecologically sensitive due to high salinity and historical pollution. The plant's secondary treatment helps reduce organic load and suspended solids, supporting the health of downstream wetlands and the local aquifer recharge areas.
Frequently asked questions
El Rosario plant is located in the Azcapotzalco borough of Ciudad de México, Mexico, at Calle Jerusalén, Barrio San Simón, Colonia Del Maestro.
The plant serves approximately 10,350 people in the surrounding area of Ciudad de México.
The treated effluent is discharged into the local drainage network, which is part of the Valley of Mexico's closed basin system, ultimately flowing into artificial canals and the remnants of Lake Texcoco.
El Rosario provides secondary treatment, which is the standard biological treatment required by Mexican regulations for municipal wastewater under NOM-001-SEMARNAT.
The plant has a designed capacity of 2,160 cubic meters per day, with a current discharge volume of approximately 980 cubic meters per day.
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