El Cedazo de San Antonio Wastewater Treatment Plant, Aguascalientes, Mexico

El Cedazo de San Antonio is a wastewater treatment plant located in the municipality of Aguascalientes, Mexico. It serves a small population of 639 residents, providing secondary treatment to manage domestic wastewater in this inland community. The plant has a designed capacity of 86.40 m³/day and currently discharges 60.48 m³/day, operating below its full capacity. As a secondary treatment facility, it meets the standard requirements for municipal wastewater treatment in Mexico, which are regulated under the national water law (Ley de Aguas Nacionales) and NOM-001-SEMARNAT standards for discharge quality. The treated effluent is likely discharged into local water bodies that drain into the Rio San Pedro or the Rio Aguascalientes, part of the Lerma-Santiago-Pacifico basin. This region supports agricultural activities and local ecosystems, making proper treatment essential for protecting water quality and downstream environments.

The plant discharges into the Lerma-Santiago-Pacifico basin, which ultimately drains into the Pacific Ocean via the Rio Grande de Santiago. The local watershed supports agricultural irrigation and seasonal wetlands that provide habitat for migratory birds and aquatic species. Effective secondary treatment helps reduce nutrient loading and organic pollutants, safeguarding downstream water quality.