Emiliano Zapata Wastewater Treatment Plant, Sinaloa, Mexico

The Emiliano Zapata wastewater treatment plant is located in the town of Emiliano Zapata, within the municipality of Elota, Sinaloa, Mexico. It serves a small population of 1,412 residents, reflecting its role in a rural or semi-urban community. The plant is situated inland, away from coastal areas, and operates under Mexico's national water regulations. The plant provides secondary treatment, which is the standard biological treatment stage that removes organic matter and suspended solids. With a designed capacity of 259.20 cubic meters per day and an actual discharge volume of 164.16 cubic meters per day, the facility operates below its design capacity. This suggests adequate capacity for current demand. As a small-scale plant in Mexico, it is subject to the country's federal water quality standards (NOM-001-SEMARNAT) which set discharge limits for pollutants. The treated effluent is discharged into local water bodies, likely contributing to the drainage basin of the Pacific coast. The plant's operation helps protect downstream ecosystems and water resources in the region. Its inland location reduces direct marine impact, but proper treatment remains essential for safeguarding local rivers and groundwater.

The plant discharges into local waterways that eventually drain into the Pacific Ocean via the Sinaloa river system. The region's semi-arid climate makes water quality management critical for agricultural and ecological uses. Downstream environments support diverse aquatic life and are important for local fisheries and irrigation. Effective treatment helps prevent nutrient pollution and protects the ecological health of the receiving waters.