Bustillos y Zamaloapan Wastewater Treatment Plant, Bustillos, Chihuahua

Bustillos y Zamaloapan is a wastewater treatment facility located in Bustillos, within the municipality of Cuauhtémoc, Chihuahua, Mexico. The plant serves a small population of 456 residents, reflecting its role in a rural or peri-urban setting. As a secondary treatment plant, it provides biological treatment to reduce organic pollutants and suspended solids before discharge. The plant has a designed capacity of 190.08 cubic meters per day and currently treats 43.20 cubic meters per day, indicating significant spare capacity. Under Mexico's national water regulations (NOM-001-SEMARNAT-1996 and subsequent updates), secondary treatment is the standard for municipal wastewater, ensuring compliance with discharge limits for biochemical oxygen demand and total suspended solids. The plant's operation is part of the broader water infrastructure managed by local authorities in Chihuahua. The treated effluent is discharged into local watercourses that drain into the Rio Conchos basin, a major tributary of the Rio Grande (Rio Bravo). This watershed supports agricultural irrigation and provides water for communities downstream. Proper treatment at Bustillos y Zamaloapan helps protect water quality in the Rio Conchos and ultimately the Rio Grande, which is a critical water source for both Mexico and the United States.

The plant discharges into the Rio Conchos basin, which flows northward to join the Rio Grande (Rio Bravo) near Ojinaga, Chihuahua. This river system is a vital water source for agriculture and urban areas in the arid Chihuahuan Desert. The Rio Grande ultimately empties into the Gulf of Mexico, supporting diverse aquatic habitats along its course. Effective wastewater treatment at Bustillos y Zamaloapan helps reduce nutrient and pathogen loads, protecting downstream ecosystems and human water users.