Overview
San Diego de La Union wastewater treatment plant serves 9,127 people in Guanajuato, Mexico, with secondary treatment. It discharges 864 m³/day of treated wastewater, supporting local water quality.
San Diego de La Union is a municipal wastewater treatment plant located in the city of San Diego de la Unión, Guanajuato, Mexico. The plant serves a population of approximately 9,127 residents, making it a small-scale facility within the region's water infrastructure. It operates with secondary treatment, which is a standard level for communities of this size in Mexico. As a secondary treatment plant, it utilizes biological processes to reduce organic matter and suspended solids before discharge. The plant has a designed capacity of 864 m³/day and currently treats an equal volume, indicating full utilization. Under Mexican regulations (NOM-001-SEMARNAT-1996), secondary treatment is required for discharges into national waters, ensuring compliance with environmental standards. The treated effluent is discharged into local water bodies, contributing to the protection of the Lerma-Santiago-Pacifico hydrological basin. This basin drains into the Pacific Ocean, supporting agricultural and ecological systems downstream. The plant plays a key role in preventing untreated wastewater from affecting local rivers and groundwater.
Environmental context
The plant discharges into the Lerma-Santiago-Pacifico basin, which flows through central Mexico to the Pacific Ocean. This watershed supports diverse aquatic life and is used for irrigation, making treatment essential to prevent nutrient pollution and protect downstream ecosystems. The region's semi-arid climate increases the importance of maintaining water quality for both human and ecological use.
Frequently asked questions
The plant is located at 96 Prolongación Allende, Centro, San Diego de la Unión, Guanajuato, 37850, Mexico.
The plant serves approximately 9,127 people in the city of San Diego de la Unión and surrounding areas.
The plant discharges treated effluent into the Lerma-Santiago-Pacifico hydrological basin, which ultimately flows to the Pacific Ocean.
The plant provides secondary treatment, which uses biological processes to reduce organic matter and suspended solids, meeting Mexican standards for discharge into national waters.
The plant operates under Mexico's NOM-001-SEMARNAT-1996, which sets limits for pollutants in wastewater discharges. Secondary treatment is required for communities of this size to protect water resources.
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