Francisco de Ibarra Wastewater Treatment Plant, Durango, Mexico

Francisco de Ibarra is a wastewater treatment plant located in the town of Francisco de Ibarra, within the municipality of San Juan del Río, Durango, Mexico. The plant serves a small population of 392 residents, reflecting its role in a rural or semi-urban community. It operates under Mexico's national water regulatory framework, which sets standards for wastewater treatment and discharge. The plant provides secondary treatment, a standard level for small agglomerations in Mexico, ensuring removal of organic matter and suspended solids. With a designed capacity of 69.98 m³/day and an actual discharge volume of 37.15 m³/day, the plant operates below its capacity, indicating room for future growth or seasonal variability. Secondary treatment typically involves biological processes such as activated sludge or trickling filters. The treated effluent is discharged into a local water body, likely a stream or arroyo that drains into the larger hydrological network of the Nazas River basin. This basin is ecologically important in the semi-arid region of northern Mexico, supporting agriculture and local biodiversity. The plant's operation helps protect downstream water quality and public health in the region.

The plant discharges into a local watercourse that flows into the Nazas River basin, a vital water source in the arid Durango region. The Nazas River ultimately drains into the Laguna de Mayran, an endorheic lake system that supports migratory birds and local agriculture. The plant's secondary treatment reduces organic pollutants, protecting the fragile aquatic ecosystem from nutrient enrichment and oxygen depletion.