Colima Villa de Alvarez Wastewater Treatment Plant, Colima, Mexico

The Colima Villa de Alvarez wastewater treatment plant is a major municipal facility serving the city of Colima in the state of Colima, Mexico. With a population served of around 196,000, it is a large-scale plant critical to the region's sanitation infrastructure. As a plant of this size in Mexico, it is expected to comply with NOM-001-SEMARNAT-1996, which sets maximum permissible limits for pollutants in wastewater discharges. Plants serving agglomerations of this scale typically employ secondary or advanced treatment to meet regulatory standards. The plant's treated effluent is discharged into local waterways that ultimately drain into the Pacific Ocean via the Armería River basin. This discharge supports downstream ecosystems and agricultural water reuse, making proper treatment essential for environmental and public health.

The plant discharges into the Armería River basin, which flows through the state of Colima and empties into the Pacific Ocean near the town of Boca de Apiza. This coastal watershed supports diverse aquatic life and is important for local fisheries and agriculture. The region's tropical climate and seasonal rainfall patterns influence flow rates and pollutant dilution, requiring robust treatment to protect downstream ecosystems.