Overview
ETE SAO MARCOS is a secondary treatment plant in Salvador, Bahia, Brazil, serving 2,147 people. It discharges 232.08 m³/day of treated wastewater near the coast.
ETE SAO MARCOS is a wastewater treatment plant located in Salvador, the capital of Bahia state in northeastern Brazil. The plant serves a small population of 2,147 people and operates with secondary treatment, which is the standard biological treatment level for municipal wastewater in Brazil. Brazil's wastewater sector is regulated by the National Environmental Council (CONAMA) and state environmental agencies. For small agglomerations like this, secondary treatment is typically required to reduce organic load and pathogens before discharge. The plant's discharge volume of 232.08 m³/day indicates a modest flow consistent with its small service population. The plant is situated within 10 km of the Atlantic coast, meaning its treated effluent likely drains into coastal waters or an estuary near Salvador. This proximity to the ocean makes proper treatment critical to protect marine ecosystems and recreational water quality in the Baía de Todos os Santos region, one of Brazil's largest bays with rich biodiversity.
Environmental context
The plant's treated effluent likely reaches the Atlantic Ocean via local drainage channels or the Baía de Todos os Santos, a large tropical bay supporting mangroves, coral reefs, and fisheries. The bay is ecologically sensitive, providing habitat for sea turtles and migratory birds. Secondary treatment helps reduce nutrient loading and organic pollution, which is important for maintaining water quality in this coastal environment.
Frequently asked questions
ETE SAO MARCOS is located in Salvador, the capital of Bahia state in northeastern Brazil. The plant is situated in the Jardim das Margaridas neighborhood, near the CIA Aeroporto highway.
The plant serves a population of 2,147 people, classifying it as a small-scale wastewater treatment facility in the Salvador metropolitan region.
The plant discharges treated wastewater at a rate of 232.08 m³ per day. Given its proximity to the coast (within 10 km), the effluent likely flows into local watercourses that drain into the Atlantic Ocean or Baía de Todos os Santos.
ETE SAO MARCOS provides secondary treatment, which involves biological processes to remove organic matter and suspended solids. This is the standard treatment level required by Brazilian regulations for municipal wastewater.
The plant operates under Brazil's environmental regulations, including CONAMA resolutions that set effluent quality standards. State-level agencies in Bahia oversee permitting and compliance for wastewater discharges.
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