Laguna Colorada Wastewater Treatment Plant, Culiacán, Sinaloa, Mexico

Laguna Colorada is a wastewater treatment plant located in the locality of La Villita, within the municipality of Culiacán, Sinaloa, Mexico. The plant serves a population of 1,174 and operates with secondary treatment, which is the standard level required for municipal wastewater in Mexico under the national water law (Ley de Aguas Nacionales). The plant has a designed capacity of 354.24 cubic meters per day and currently discharges 259.20 cubic meters per day, indicating it operates below its full capacity. As a secondary treatment facility, it removes organic matter and suspended solids, meeting the typical effluent standards for discharge into inland waters. The treated effluent is likely discharged into a local watercourse that drains into the Pacific Ocean via the Sinaloa river system. The region's watershed supports agricultural activities and diverse aquatic habitats. Proper treatment helps protect downstream water quality and ecosystems.

The plant is located inland in the state of Sinaloa, within the catchment area that drains towards the Pacific Ocean. The nearest major river is the Culiacán River, which flows into the Gulf of California. The region supports irrigated agriculture and estuarine habitats. Secondary treatment reduces organic pollutants, safeguarding the river's ecological health and downstream coastal waters.