Campo 30 Wastewater Treatment Plant, Francisco I. Madero, Sonora

Campo 30 is a municipal wastewater treatment plant located in Francisco I. Madero (Campo 30), a locality in the municipality of Cajeme, Sonora, Mexico. The plant serves a population of approximately 2,149 residents, reflecting its role in managing domestic wastewater for a small community in the arid northwestern region of Mexico. The plant employs secondary treatment, a standard biological process that removes organic matter and suspended solids. With a designed capacity of 298.08 cubic meters per day and a current discharge volume of 260.06 cubic meters per day, the facility operates at about 87% capacity. Mexican wastewater treatment plants are regulated under the National Water Law (Ley de Aguas Nacionales) and NOM-001-SEMARNAT-1996, which sets discharge limits for pollutants into national waters. The treated effluent from Campo 30 is discharged into the local environment, likely contributing to the Yaqui River basin or nearby arroyos that drain into the Gulf of California. This region is ecologically sensitive due to its arid climate and reliance on limited water resources, making proper treatment essential for protecting downstream aquatic habitats and agricultural water quality.

The plant discharges into the Yaqui River basin, which flows through Sonora into the Gulf of California. This watershed supports diverse aquatic life and is critical for irrigation in the region. The Gulf of California is a biologically rich marine environment, home to endemic species and important fisheries, so effective wastewater treatment helps reduce nutrient and pathogen loads that could impact coastal ecosystems.