San Miguel de las Mesas Wastewater Treatment Plant, Sinaloa, Mexico

San Miguel de las Mesas wastewater treatment plant serves the small community of San Miguel de las Mesas in the municipality of Cosalá, Sinaloa, Mexico. The plant provides secondary treatment, which is appropriate for a small population of 548 residents, and has a designed capacity of 60.48 m³/day with a current discharge volume of 51.84 m³/day. As a Mexican wastewater facility, the plant operates under the national regulatory framework established by the Comisión Nacional del Agua (CONAGUA), which sets discharge standards under the Ley de Aguas Nacionales. For small communities like this, secondary treatment is typically sufficient to meet water quality objectives for receiving water bodies. The plant's treated effluent is discharged into the local watershed, which ultimately drains into the Pacific Ocean via the Sinaloa river system. The region's aquatic ecosystems depend on well-treated wastewater to maintain water quality and support biodiversity in the coastal lagoons and estuaries of Sinaloa.

The plant discharges into the local watershed within the Sinaloa region, which drains into the Pacific Ocean. The downstream environment includes coastal lagoons and estuaries that support diverse aquatic life, including fish and migratory birds. Proper wastewater treatment is essential to prevent nutrient enrichment and protect these ecologically sensitive areas.