Guadalupe Wastewater Treatment Plant, San Andrés, Chihuahua, Mexico

The Guadalupe wastewater treatment plant is located in the town of San Andrés, within the municipality of Riva Palacio, Chihuahua, Mexico. It serves a small population of 91 residents, reflecting its role in a rural or semi-rural community. The plant provides secondary treatment, which is a standard biological process that significantly reduces organic matter and suspended solids before discharge. With a designed capacity of 17.28 m³/day and an average discharge volume of 8.64 m³/day, the plant operates at about half its capacity. As a small facility in Mexico, it is subject to national water quality standards (NOM-001-SEMARNAT) that set limits on pollutants in treated wastewater. Secondary treatment is appropriate for this scale, ensuring compliance with basic environmental requirements. The treated effluent is discharged into local watercourses that eventually drain into the Rio Conchos basin, a major tributary of the Rio Grande (Rio Bravo). The Rio Conchos supports agriculture and ecosystems in the arid Chihuahuan Desert. Proper treatment helps protect downstream water quality and aquatic life in this sensitive region.

The plant's discharge flows into the Rio Conchos watershed, which drains into the Rio Grande (Rio Bravo) and ultimately the Gulf of Mexico. This arid region relies on limited surface water for irrigation and habitat. The secondary treatment reduces organic load and suspended solids, helping to maintain water quality for downstream communities and ecosystems, including fish and migratory birds that depend on the Rio Conchos corridor.