Comoa Wastewater Treatment Plant, Cosalá, Sinaloa, Mexico

Comoa wastewater treatment plant is located in the town of Comoa, within the municipality of Cosalá, Sinaloa, Mexico. This small-scale facility serves a population of 67 residents, reflecting its role in a rural or small community setting. The plant provides secondary treatment, which is a standard biological process that removes organic matter and suspended solids. With a designed capacity of 51.84 cubic meters per day and an actual discharge volume of 43.20 cubic meters per day, the plant operates below its capacity. In Mexico, wastewater treatment plants are regulated under the National Water Law (Ley de Aguas Nacionales) and NOM-001-SEMARNAT-1996, which sets discharge limits for pollutants. The treated effluent is discharged into the local environment, likely into a nearby stream or river that eventually drains into the Pacific Ocean via the Sinaloa River basin. The plant's operation helps protect local water quality and downstream ecosystems, including coastal areas that support fisheries and biodiversity.

The plant discharges into a local watercourse within the Sinaloa River basin, which flows westward to the Pacific Ocean. This region supports diverse aquatic life and is important for local agriculture and fishing. Proper treatment helps prevent nutrient pollution and protects downstream habitats, including coastal lagoons and estuaries.