San Antonio Wastewater Treatment Plant, Sinaloa, Mexico

San Antonio is a wastewater treatment plant located in the town of San Antonio, within the municipality of Guasave, Sinaloa, Mexico. The plant serves a population of 821 and operates under Mexico's national water regulations, which require secondary treatment for communities of this size to protect public health and the environment. The plant provides secondary treatment, a standard biological process that removes organic matter and suspended solids. With a designed capacity of 103.68 volume units and an average daily discharge of 77.76 volume units, the facility operates below its maximum capacity, indicating room for future growth. The treated effluent is discharged into local waterways that eventually drain into the Pacific Ocean via the Sinaloa River system. This region supports diverse aquatic life and agricultural activities, making proper wastewater treatment essential for maintaining water quality and ecosystem health.

The plant's discharge enters the local drainage network within the Sinaloa River basin, which flows westward into the Pacific Ocean. The downstream environment includes coastal lagoons and estuaries that provide critical habitat for fish, birds, and other wildlife. Proper treatment helps prevent nutrient pollution and protects these sensitive ecosystems from degradation.