Overview
San Antonio de Los Buenos wastewater treatment plant serves 155,245 people in Tijuana, Baja California, Mexico. Located near the coast, it operates under Mexican water quality regulations.
San Antonio de Los Buenos is a wastewater treatment plant serving the Tijuana area in Baja California, Mexico. It handles wastewater from a population of approximately 155,245 people, placing it in the large agglomeration category. The plant is situated in the Zona Río district, near the Tijuana River. Under Mexican regulations (NOM-001-SEMARNAT-1996 and subsequent updates), large treatment plants are required to achieve secondary treatment or better to protect receiving waters. The plant's scale suggests it must meet stringent discharge standards to comply with federal norms. The plant's treated effluent likely discharges into the Tijuana River or directly into the Pacific Ocean, given its proximity to the coast (within 50 km). This outflow affects the Tijuana River Estuary and nearby coastal waters, which support diverse marine life and are important for regional fisheries and tourism.
Environmental context
The plant is located in the Tijuana River watershed, which drains into the Pacific Ocean near the US-Mexico border. The Tijuana River Estuary is a critical coastal wetland that provides habitat for migratory birds and fish species. Discharges from the plant must be managed to prevent nutrient loading and pathogen contamination that could harm this sensitive ecosystem and downstream beaches.
Frequently asked questions
The plant is located in the Zona Río district of Tijuana, Baja California, Mexico, near the Tijuana River.
The plant serves approximately 155,245 people, classifying it as a large agglomeration under Mexican wastewater regulations.
The plant likely discharges into the Tijuana River or directly into the Pacific Ocean, given its coastal proximity.
The plant operates under Mexican standard NOM-001-SEMARNAT-1996, which sets maximum pollutant limits for wastewater discharges into national waters. Large plants like this must achieve secondary treatment or equivalent.
For agglomerations over 100,000 people, Mexican regulations generally require secondary treatment with nutrient removal, especially if discharging to sensitive coastal areas. Many plants use activated sludge or lagoon systems.
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