Overview
18 de Diciembre wastewater treatment plant in Sinaloa, Mexico, serves 821 people with secondary treatment. It discharges 77.76 m³/day of treated wastewater, with a designed capacity of 86.40 m³/day.
The 18 de Diciembre wastewater treatment plant is located in the small community of 18 de Diciembre, within the municipality of Angostura, Sinaloa, Mexico. This facility serves a population of 821 residents, reflecting its role in managing domestic wastewater for a rural agglomeration. The plant provides secondary treatment, which is the standard level required under Mexican regulations (NOM-001-SEMARNAT) for municipal wastewater before discharge. It has a designed capacity of 86.40 m³/day and currently treats 77.76 m³/day, indicating operational headroom. The facility is part of Mexico's national water infrastructure managed by CONAGUA and local water utilities. The treated effluent is discharged into local water bodies that drain into the Pacific Ocean via the Sinaloa River system. The region's agricultural economy and coastal ecosystems depend on proper wastewater management to prevent nutrient pollution and protect downstream habitats.
Environmental context
The plant discharges into the Sinaloa River basin, which flows into the Pacific Ocean near the Gulf of California. This coastal region supports diverse marine life, including shrimp fisheries and migratory birds. Proper secondary treatment helps reduce organic load and pathogens, safeguarding water quality for downstream communities and sensitive estuarine environments.
Frequently asked questions
The plant is located in the community of 18 de Diciembre, in the municipality of Angostura, Sinaloa, Mexico.
The plant serves approximately 821 residents, making it a small-scale municipal facility.
The plant provides secondary treatment, which is the standard required by Mexican regulations for municipal wastewater before discharge.
The plant operates under Mexico's NOM-001-SEMARNAT standard, which sets maximum permissible limits for pollutants in treated wastewater discharged into national waters.
For small communities like 18 de Diciembre, secondary treatment is typical, often using technologies such as activated sludge or stabilization ponds to meet regulatory standards.
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