Cabazán Wastewater Treatment Plant, Sinaloa, Mexico

Cabazán wastewater treatment plant is located in the town of Cabazán, within the municipality of San Ignacio, Sinaloa, Mexico. This facility serves a small population of 639 residents, reflecting its role in a rural or semi-urban community. The plant is part of Mexico's national wastewater infrastructure managed under the Ley de Aguas Nacionales. The plant provides secondary treatment, a standard biological process that removes organic matter and suspended solids. With a designed capacity of 86.40 volume units and an actual discharge volume of 60.48, it operates below its design capacity. As a small-scale facility, it is subject to Mexican Official Standards (NOM-001-SEMARNAT-1996) that set discharge limits for pollutants into national waters. The treated effluent is discharged into local water bodies that eventually drain into the Pacific Ocean via the Sinaloa river system. The region's watershed supports diverse aquatic life and agricultural activities downstream. Proper treatment helps protect these ecosystems from nutrient pollution and pathogens, maintaining water quality for both human use and environmental health.

The plant discharges into local streams that flow through the Sinaloa watershed, ultimately reaching the Pacific Ocean. This coastal region supports mangrove ecosystems and estuarine habitats that are critical for fish and bird species. Effective secondary treatment reduces organic load and pathogens, preventing eutrophication and protecting downstream water quality for communities and wildlife.