Cubiri de La Loma Wastewater Treatment Plant, Sinaloa, Mexico

Cubiri de La Loma is a municipal wastewater treatment plant located in the town of Cubiri de la Loma, within the municipality of Sinaloa, Sinaloa state, Mexico. The plant serves a small population of 730 residents, reflecting its role in a rural or semi-urban community. It is situated inland, more than 10 km from the coast, but within 50 km of the Pacific coastline. The plant provides secondary treatment, a standard level for small communities in Mexico under national water quality regulations (NOM-001-SEMARNAT-1996). It treats an average of 69.12 m³ of wastewater per day, utilizing 88.9% of its designed capacity of 77.76 m³/day. This high utilization rate indicates the plant is effectively meeting local demand. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids. The treated effluent is discharged into a local watercourse that ultimately drains into the Pacific Ocean via the Sinaloa River basin. The plant's operation helps protect downstream water quality and aquatic ecosystems, including coastal environments near the Gulf of California. By treating wastewater to secondary standards, the facility reduces nutrient and pathogen loads, supporting ecological health in the region.

The plant discharges into a local stream that flows into the Sinaloa River, which empties into the Pacific Ocean near the Gulf of California. This coastal region supports diverse marine life, including fisheries and migratory species. Secondary treatment reduces organic pollutants and pathogens, helping to maintain water quality in the river and coastal zone, which is important for both ecological integrity and local communities that rely on these waters.