El Sinaloense Wastewater Treatment Plant, Culiacán, Sinaloa, Mexico

El Sinaloense is a wastewater treatment plant located in the town of El Sinaloense, within the municipality of Culiacán, Sinaloa, Mexico. The plant serves a population of 1,825 and is part of the municipal wastewater infrastructure for this small community in northwestern Mexico. The plant provides secondary treatment, which is the standard biological treatment stage that removes organic matter and suspended solids. Its designed capacity is 190.08 m³/day, with an actual discharge volume of 172.80 m³/day, indicating near-capacity operation. Under Mexican regulations (NOM-001-SEMARNAT-1996), secondary treatment is required for discharges to water bodies, and the plant's performance aligns with these standards. The plant is located within 10 km of the Pacific coast, meaning its treated effluent ultimately reaches coastal waters. The receiving water body is likely a local stream or drainage channel that flows into the Pacific Ocean, supporting the region's marine and estuarine ecosystems. The Sinaloa coast is ecologically important for fisheries and migratory birds.

The plant discharges into a local watercourse that drains into the Pacific Ocean near the coast of Sinaloa. This coastal zone supports diverse marine life, including shrimp and fish populations important for local fisheries. The treated effluent contributes to the freshwater flow into the ocean, but secondary treatment helps reduce organic pollution and protect coastal water quality.