Ignacio Allende Wastewater Treatment Plant, Sinaloa, Mexico

The Ignacio Allende wastewater treatment plant is located in the town of Ignacio Allende, within the municipality of Angostura, Sinaloa, Mexico. This facility serves a small population of 365 residents, reflecting its role in a rural or small community setting. The plant is situated in a coastal region, less than 10 kilometers from the Pacific Ocean. The plant provides secondary treatment, which is a standard biological process that removes organic matter and suspended solids. With a designed capacity of 43.20 cubic meters per day and a current discharge volume of 34.56 cubic meters per day, the plant operates below its full capacity. Under Mexican regulations (NOM-001-SEMARNAT-1996), secondary treatment is required for discharges into water bodies, and this plant meets that standard. The treated effluent is discharged into local waterways that ultimately drain into the Pacific Ocean. The coastal environment supports diverse marine life, including fisheries and estuarine habitats. Proper treatment is essential to protect water quality in the region, which is important for both ecological health and local communities that rely on coastal resources.

The plant discharges into local streams that flow into the Pacific Ocean near the Gulf of California. This coastal region supports important fisheries and mangrove ecosystems. The treated effluent must meet Mexican water quality standards to prevent nutrient enrichment and protect marine biodiversity. The area is also part of a larger watershed that drains agricultural lands, making proper wastewater treatment critical for downstream water quality.