Guadalupe de Atlas Wastewater Treatment Plant, Aguascalientes, Mexico

The Guadalupe de Atlas wastewater treatment plant is located in the town of Guadalupe de Atlas, within the municipality of Asientos, Aguascalientes, Mexico. It serves a population of 3,651 residents, providing essential sanitation infrastructure for this inland community. The plant is situated in a semi-arid region where water resources are critically managed. The facility employs secondary treatment, which is the standard biological process required under Mexican regulations (NOM-001-SEMARNAT) for municipal wastewater. The plant has a designed capacity of 216.00 cubic meters per day and currently discharges 345.60 cubic meters daily, indicating operation above its nominal capacity. This scale of plant is typical for small agglomerations in Mexico, where treatment objectives focus on reducing organic matter and suspended solids before discharge. The treated effluent is discharged into local watercourses that eventually drain into the Rio San Pedro, part of the larger Rio Grande de Santiago basin, which flows into the Pacific Ocean. The plant plays a vital role in protecting downstream water quality in a region where agriculture and livestock farming are primary economic activities, helping to prevent contamination of surface and groundwater resources.

The plant discharges into local streams that feed the Rio San Pedro, a tributary of the Rio Grande de Santiago, which ultimately reaches the Pacific Ocean. The region's semi-arid climate makes water quality management critical for sustaining agricultural irrigation and local ecosystems. Downstream water bodies support diverse aquatic life and are important for migratory birds, though specific protected-area designations are not confirmed.