Casa Blanca Wastewater Treatment Plant, Casas Blancas, Sinaloa

Casa Blanca is a wastewater treatment plant located in the community of El Campito, Casas Blancas, within the municipality of Guasave, Sinaloa, Mexico. The plant serves a population of approximately 1,917 people, classifying it as a small-scale municipal facility. It operates under Mexico's national water regulations, which require secondary treatment for discharges into inland waters. The plant provides secondary treatment, a standard biological process that removes organic matter and suspended solids. Its designed capacity is 224.64 cubic meters per day, and it currently treats an average daily flow of 181.44 cubic meters per day. As a secondary treatment facility, it meets the basic requirements for protecting local water quality. The treated effluent is discharged into the local watershed, which ultimately drains into the Pacific Ocean via the Gulf of California. The region's water bodies support diverse aquatic life and are important for local agriculture and fisheries. Proper wastewater treatment helps maintain the ecological health of these downstream environments.

The plant discharges into the local drainage network that flows into the Gulf of California, a biologically rich marine ecosystem. This region supports important fisheries and migratory bird habitats. Secondary treatment reduces organic pollutants and suspended solids, helping to protect water quality in the downstream watershed and coastal zone.