Presa Los Gringos Wastewater Treatment Plant, Aguascalientes, Mexico

Presa Los Gringos is a wastewater treatment plant located in Aguascalientes, Mexico, serving a population of around 16,330 residents. The plant is situated in the municipality of Aguascalientes, within the state of Aguascalientes, and plays a key role in managing local wastewater. As a medium-sized facility, it operates under Mexico's national water regulations, which require treatment to meet standards for discharge into water bodies. Plants of this scale typically employ secondary treatment to reduce organic pollutants and suspended solids before discharge. The treated effluent is released into the local watershed, which drains into the Rio San Pedro and eventually into the Rio Grande de Santiago, a major river system flowing into the Pacific Ocean. This water body supports diverse aquatic life and is important for regional agriculture and ecosystems.

The plant discharges into the Rio San Pedro, a tributary of the Rio Grande de Santiago, which flows through central Mexico before reaching the Pacific Ocean. The watershed supports a variety of aquatic species and is used for irrigation, making proper treatment essential to prevent nutrient pollution and protect downstream ecosystems.