Bacubirito Wastewater Treatment Plant, Sinaloa, Mexico

The Bacubirito wastewater treatment plant is located in the town of Bacubirito, within the municipality of Sinaloa, Sinaloa, Mexico. It serves a population of approximately 1,356 residents, classifying it as a small-scale municipal facility. The plant operates with secondary treatment, which is standard for communities of this size under Mexican water quality regulations. With a designed capacity of 224.64 m³/day and a reported discharge volume of 198.72 m³/day, the plant operates below its full capacity. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids, meeting national discharge standards. As a small agglomeration, the plant is subject to Mexico's federal water laws (Ley de Aguas Nacionales) and NOM-001-SEMARNAT-1996, which set limits for pollutants in wastewater discharges. The treated effluent is discharged into local water bodies that drain into the Pacific Ocean via the Sinaloa River basin. The region's semi-arid climate and agricultural activities make water quality management critical for downstream ecosystems and human use. The plant plays a key role in protecting local streams and groundwater from untreated sewage.

The Bacubirito plant discharges into the Sinaloa River watershed, which flows westward through the state of Sinaloa and empties into the Gulf of California (Sea of Cortez). This coastal ecosystem supports diverse marine life, including commercially important fish and shrimp species. The region's agricultural runoff and urban discharges make the plant's secondary treatment essential for reducing nutrient loads and preventing eutrophication in downstream waters.