Santa María de Gallardo Wastewater Treatment Plant, Aguascalientes, Mexico

Santa María de Gallardo wastewater treatment plant is located in the municipality of Aguascalientes, Aguascalientes, Mexico. It serves a small population of 1,004 residents, providing essential sanitation services to this rural community. The plant is situated inland, far from coastal areas, and its operations are part of Mexico's national wastewater management infrastructure. The plant provides secondary treatment, which is appropriate for its small scale. With a designed capacity of 129.60 thousand m³/year and an actual discharge volume of 95.04 thousand m³/year, it operates below its capacity. Mexican regulations under NOM-001-SEMARNAT-1996 set discharge standards for wastewater, and plants of this size are expected to meet these limits to protect water quality. The treated effluent is discharged into local water bodies that eventually drain into the Pacific Ocean via the Lerma-Santiago basin. The region's semi-arid climate makes water quality management critical for sustaining local ecosystems and agricultural water reuse. The plant plays a key role in preventing untreated wastewater from impacting downstream communities and the environment.

The plant discharges into the Lerma-Santiago basin, which flows into the Pacific Ocean. This watershed supports diverse aquatic life and provides water for irrigation in the region. The semi-arid climate means that maintaining water quality is essential for both ecological health and human use, as the river system is a vital resource for agriculture and drinking water downstream.