Agua Caliente de Garate Wastewater Treatment Plant, Sinaloa, Mexico

Agua Caliente de Garate is a municipal wastewater treatment plant located in the town of Agua Caliente de Gárate, within the municipality of Concordia, Sinaloa, Mexico. The plant serves a population of 1,813 residents, reflecting its role in managing domestic wastewater for this small community. The facility operates with secondary treatment, which is the standard biological process for removing organic matter and suspended solids. With a designed capacity of 345.60 m³/day and an actual discharge volume of 302.40 m³/day, the plant operates below its maximum 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 into national waters. The treated effluent is likely discharged into a local watercourse that drains into the Pacific Ocean via the Presidio River basin. The region's tropical climate and proximity to the coast make proper wastewater treatment essential for protecting downstream aquatic ecosystems and preventing nutrient enrichment in coastal waters.

The plant's discharge likely enters the Presidio River watershed, which flows westward into the Pacific Ocean near Mazatlán. This coastal region supports diverse marine life, including mangroves and estuaries that serve as nursery habitats for fish and crustaceans. Effective secondary treatment helps reduce organic loading and nutrient inputs, mitigating risks of eutrophication and maintaining water quality in the downstream coastal environment.