ETE FOSSA SANTA ROSA - Secondary Wastewater Treatment in Cuiabá, Mato Grosso

ETE FOSSA SANTA ROSA is a wastewater treatment plant located in the Santa Rosa neighborhood of Cuiabá, Mato Grosso, Brazil. It serves a small population of 70 residents, reflecting its role in localized sanitation infrastructure within the Cuiabá metropolitan region. The plant provides secondary treatment, a standard biological process that removes organic matter and suspended solids. The plant's discharge volume of 48.72 cubic meters per day aligns with its small service population. In Brazil, wastewater treatment is regulated by federal standards under CONAMA resolutions, and plants of this scale typically operate under municipal or state environmental permits. The treated effluent is discharged into local water bodies that ultimately drain into the Cuiabá River, a major tributary of the Paraguay River basin. This basin supports the Pantanal, one of the world's largest tropical wetlands, making proper treatment essential for protecting downstream aquatic ecosystems and biodiversity.

The plant discharges into the Cuiabá River watershed, which flows into the Paraguay River and feeds the Pantanal floodplain. The Pantanal is a globally significant wetland that supports diverse aquatic life, including fish, caimans, and migratory birds. Secondary treatment helps reduce organic pollution and nutrient loads, mitigating eutrophication risks in this sensitive downstream environment.