Overview
ETE MARILEA is a wastewater treatment plant in Rio das Ostras, Rio de Janeiro, Brazil, serving approximately 26,754 people. It is located within 50 km of the coast, discharging into the Atlantic Ocean watershed.
ETE MARILEA is a wastewater treatment plant located in the Costazul neighborhood of Rio das Ostras, a coastal city in the state of Rio de Janeiro, Brazil. The plant serves a population of about 26,754 residents, placing it in the medium-agglomeration category under Brazilian regulatory frameworks. As part of the municipal sanitation infrastructure, it plays a key role in managing domestic wastewater from this growing urban area. In Brazil, wastewater treatment plants of this scale are typically regulated under federal CONAMA resolutions and state-level environmental permits, which mandate secondary treatment or equivalent for discharges into sensitive water bodies. Given the coastal proximity, the plant likely operates under stringent effluent standards to protect marine and estuarine environments. Treated effluent from ETE MARILEA ultimately reaches the Atlantic Ocean via local drainage systems. The region's coastal ecosystems, including sandy beaches and restinga vegetation, are ecologically sensitive and support diverse marine life. Proper treatment is essential to prevent nutrient loading and pathogen contamination that could affect recreational waters and fisheries in the area.
Environmental context
The plant discharges into the Atlantic Ocean via local watercourses in the Rio das Ostras region. The coastal zone features sandy beaches and rocky shores that support diverse aquatic life, including sea turtles and migratory birds. The area is part of the broader Southeastern Brazil coastal watershed, where untreated or poorly treated wastewater can lead to eutrophication and harmful algal blooms, impacting both tourism and marine biodiversity.
Frequently asked questions
ETE MARILEA is located in the Costazul neighborhood of Rio das Ostras, in the state of Rio de Janeiro, Brazil.
The plant serves approximately 26,754 people, making it a medium-sized agglomeration in the region.
Treated effluent from ETE MARILEA is discharged into local watercourses that flow into the Atlantic Ocean, as the plant is within 50 km of the coast.
The plant helps protect the coastal watershed of Rio das Ostras, including streams and estuaries that drain into the Atlantic Ocean, preserving water quality for recreation and marine life.
In Brazil, plants like ETE MARILEA are regulated under CONAMA resolutions and state environmental permits, which require secondary treatment or equivalent for discharges near sensitive coastal areas to prevent pollution.
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