Capomos Wastewater Treatment Plant, Sinaloa, Mexico

Capomos is a wastewater treatment plant located in the town of Capomos, within the municipality of Angostura, Sinaloa, Mexico. The plant serves a population of 1,369 and provides secondary treatment, which is the standard biological treatment for municipal wastewater in Mexico under NOM-001-SEMARNAT-1996 regulations. The plant has a designed capacity of 138.24 cubic meters per day and currently discharges 129.60 cubic meters per day of treated effluent. As a secondary treatment facility, it meets the required effluent quality standards for biochemical oxygen demand and total suspended solids, protecting local water resources. The treated wastewater is discharged into the local watershed, which drains into the Pacific Ocean via the Sinaloa River system. The plant plays a key role in preventing untreated sewage from entering the region's waterways, supporting both public health and the ecological health of the coastal environment.

The plant's effluent enters the local drainage network that flows into the Sinaloa River, which ultimately reaches the Pacific Ocean near the Gulf of California. This coastal region supports diverse aquatic life, including fish and migratory birds, and is ecologically sensitive to nutrient pollution. Secondary treatment helps reduce organic load and protect downstream water quality.