San Jose Wastewater Treatment Plant, Baviácora, Sonora, Mexico

The San Jose wastewater treatment plant is located in San José de Baviácora, a locality within the municipality of Baviácora in the state of Sonora, Mexico. The plant serves a small population of 675 residents, reflecting its role in a rural or semi-rural community. As a municipal facility, it is part of Mexico's national wastewater infrastructure managed under the Ley de Aguas Nacionales. The plant operates with secondary treatment, which is the standard biological treatment process that removes organic matter and suspended solids. It has a designed capacity of 77.76 cubic meters per day and currently discharges an average volume of 63.94 cubic meters per day, indicating a utilization rate that aligns with the population served. The facility is not located near the coast, reducing direct marine discharge risks. The treated wastewater is discharged into the local environment, likely into a nearby arroyo or river that flows into the Sonora River basin. This watershed ultimately drains into the Gulf of California, supporting regional hydrology and downstream ecosystems. The plant's operation helps protect water quality in this arid region where water resources are critical for agriculture and biodiversity.

The plant discharges into the Sonora River basin, which flows through the Sonoran Desert and eventually reaches the Gulf of California. This arid region relies on limited surface water, making treatment essential to prevent contamination of downstream water bodies. The receiving environment supports riparian habitats and species adapted to seasonal flows, and the plant's secondary treatment helps reduce organic loading that could otherwise lead to eutrophication in the gulf's coastal waters.