Lauro del Villar Wastewater Treatment Plant, Durango, Mexico

The Lauro del Villar wastewater treatment plant is located in the town of Lauro de Villar, within the municipality of Nombre de Dios, Durango, Mexico. This facility serves a small population of 593 residents, reflecting its role in a rural or small community setting. The plant provides secondary treatment, which is the standard biological process for removing organic matter and suspended solids. It has a designed capacity of 56.16 volume units and discharges a similar daily volume, indicating full utilization. As a Mexican facility, it operates under the national water quality standards (NOM-001-SEMARNAT) that set discharge limits for pollutants. The treated effluent is released into local surface waters, likely a stream or arroyo that drains into the broader Nazas-Aguanaval basin, which flows into the Laguna de Mayran and ultimately the Gulf of Mexico. This watershed supports agricultural activities and seasonal wetlands, making proper treatment essential for protecting downstream water quality and ecosystem health.

The plant discharges into a local watercourse that is part of the Nazas-Aguanaval basin, an endorheic system that feeds the Laguna de Mayran, a seasonal lake in northern Mexico. This watershed is ecologically important for migratory birds and supports irrigated agriculture. Secondary treatment helps reduce organic pollution, safeguarding the aquatic life and water quality in this semi-arid region.