ETE Barigui Wastewater Treatment Plant, Mongaguá, São Paulo, Brazil

ETE Barigui is a wastewater treatment plant located in Mongaguá, within the Baixada Santista metropolitan region of São Paulo, Brazil. The plant serves a population of around 11,600 residents, classifying it as a small to medium agglomeration under Brazilian wastewater management frameworks. Its location near the coast places it in a sensitive environmental context where proper treatment is critical for protecting marine ecosystems. As a plant in Brazil, ETE Barigui operates under the national regulatory framework established by the National Environment Council (CONAMA) and state-level environmental agencies. For agglomerations of this scale, secondary treatment is typically required to reduce organic load and suspended solids before discharge. The plant's designed capacity is 1.00 (likely in cubic meters per second or similar unit), indicating a modest infrastructure scale. The plant's discharge ultimately flows into the Atlantic Ocean via local watercourses in the Baixada Santista region. This coastal area supports diverse marine life, including mangroves and estuarine habitats that are ecologically sensitive. Proper wastewater treatment is essential to prevent nutrient pollution and protect water quality for both aquatic ecosystems and recreational uses along the coast.

ETE Barigui discharges treated wastewater into local water bodies that drain into the Atlantic Ocean near Mongaguá, within the Baixada Santista region. This coastal area features mangroves and estuaries that serve as critical nursery habitats for fish and crustaceans. The proximity to the ocean means that any nutrient or pollutant loads can directly impact marine water quality and nearshore ecosystems, including beaches and rocky shores that support diverse aquatic life.