San Geronimo Wastewater Treatment Plant, San Gerónimo, Aguascalientes

San Geronimo is a wastewater treatment plant located in San Gerónimo, within the municipality of El Llano, Aguascalientes, Mexico. The plant serves a small population of 183 residents, reflecting its role in a rural or semi-urban setting. It operates as part of the local municipal wastewater infrastructure. The plant provides secondary treatment, which is the standard biological treatment stage that removes organic matter and suspended solids. With a designed capacity of 86.40 units and a current discharge volume of 17.28 units, the plant operates well below its capacity. Under Mexican regulations (NOM-001-SEMARNAT-1996 and subsequent updates), secondary treatment is required for discharges into national waters, and this plant meets that standard. The treated effluent is discharged into local water bodies, likely contributing to the hydrological network of the Aguascalientes region. The area is inland, and the plant's discharge ultimately flows into the Lerma-Santiago-Pacifico basin, which drains into the Pacific Ocean. The plant helps protect local streams and groundwater from untreated sewage, supporting the ecological health of the region's semi-arid environment.

The plant discharges into the Lerma-Santiago-Pacifico basin, a major hydrological system that flows through central Mexico to the Pacific Ocean. The receiving waters support agricultural irrigation and local ecosystems in a semi-arid climate. Protecting these water bodies from untreated wastewater is critical for maintaining water quality for downstream communities and biodiversity.