Arroyo Hondo Wastewater Treatment Plant, Aguascalientes, Mexico

Arroyo Hondo is a wastewater treatment plant located in the town of Arroyo Hondo, within the municipality of Tepezalá, Aguascalientes, Mexico. The facility serves a small population of 365 residents, reflecting its role in a rural or semi-urban setting. As part of Mexico's national wastewater infrastructure, the plant contributes to local sanitation and environmental protection. The plant employs secondary treatment, which is the standard biological process for removing organic matter and suspended solids. It has a designed capacity of 86.40 cubic meters per day and currently treats 34.56 cubic meters daily, indicating a utilization rate of about 40%. This spare capacity suggests potential for future growth or seasonal variations. Under Mexican regulations (NOM-001-SEMARNAT-1996), secondary treatment is required for discharges into national waters, ensuring compliance with federal water quality standards. The treated effluent is discharged into local water bodies that ultimately drain into the Rio Grande de Santiago basin, which flows westward through Jalisco to the Pacific Ocean. The plant's operation helps protect downstream aquatic ecosystems and supports water quality in the region's semi-arid environment, where water resources are particularly valuable.

The plant discharges into local streams that are part of the Rio Grande de Santiago watershed, which drains into the Pacific Ocean via the Santiago River. This basin supports diverse aquatic life and provides water for agriculture and communities in the region. The semi-arid climate of Aguascalientes makes water quality management critical for maintaining ecological balance and human water security.