Lomas de Cocoyoc Wastewater Treatment Plant, Atlatlahucan, Morelos, Mexico

Lomas de Cocoyoc is a wastewater treatment plant located in the community of Lomas de Cocoyoc, within the municipality of Atlatlahucan, Morelos, Mexico. The plant serves a population of approximately 5,476 people, classifying it as a small-scale municipal facility. It is situated inland, about 18.9 km from the nearest coastline, and operates under Mexico's national water quality regulations. The plant provides secondary treatment, which is the standard level required for municipal wastewater in Mexico under the official Mexican standards (NOM-001-SEMARNAT). Its designed capacity is 604.80 m³/day, with a reported discharge volume of 518.40 m³/day, indicating a utilization rate near 86%. Secondary treatment typically involves biological processes such as activated sludge or biofilters to reduce organic matter and suspended solids. The treated effluent is discharged into local water bodies that ultimately drain into the Balsas River basin, one of Mexico's major hydrological regions. The Balsas River flows southwestward into the Pacific Ocean, supporting diverse aquatic ecosystems and agricultural activities along its course. The plant's operation helps protect downstream water quality and public health in the region.

The plant discharges into local streams that are part of the Balsas River basin, which drains into the Pacific Ocean. The Balsas River supports a variety of aquatic life and is important for irrigation in the region. The plant's secondary treatment reduces organic pollutants and suspended solids, helping to maintain the ecological health of downstream waters.