San Juan de Sabinas Wastewater Treatment Plant, Coahuila, Mexico

The San Juan de Sabinas wastewater treatment plant is located in the city of San Juan de Sabinas, Coahuila, Mexico. It serves a population of 1,723 and has a designed capacity of 259.20 cubic meters per day, with a secondary treatment level. The plant is part of the municipal wastewater infrastructure for this inland community in northern Mexico. As a secondary treatment facility, the plant provides biological treatment to reduce organic matter and suspended solids. For a small agglomeration of this size, secondary treatment is the standard requirement under Mexican regulations (NOM-001-SEMARNAT), which set discharge limits for conventional pollutants. The plant's discharge volume of 259.20 m³/day indicates consistent operation at designed capacity. The treated effluent is discharged into local watercourses that eventually drain into the Rio Grande basin, which flows into the Gulf of Mexico. The plant plays a key role in protecting downstream water quality in the semi-arid region of Coahuila, where water resources are scarce and sensitive to pollution.

The plant discharges into the Rio Grande basin, which flows through northern Mexico and Texas before reaching the Gulf of Mexico. This watershed supports diverse aquatic life and is an important water source for agriculture and communities. In the semi-arid climate of Coahuila, maintaining water quality is critical for ecosystem health and human use.