Overview
ETE SUL CUIABA is a municipal wastewater treatment plant serving Cuiabá, Mato Grosso, Brazil. It treats wastewater for approximately 105,465 people in the Cuiabá River basin.
ETE SUL CUIABA is a municipal wastewater treatment plant located in Cuiabá, the capital of Mato Grosso state in Brazil's Centro-Oeste region. The plant serves a population of approximately 105,465 people, placing it in the medium-to-large agglomeration category for Brazilian wastewater infrastructure. Brazil's wastewater treatment is regulated under federal standards such as CONAMA Resolution 430/2011 and the National Basic Sanitation Plan (PLANSAB). For plants serving over 100,000 people, secondary treatment is typically required to reduce organic load and protect receiving water bodies. The plant's discharge is managed within the framework of state-level environmental licensing by Mato Grosso's environmental agency (SEMA-MT). The plant's treated effluent discharges into the Cuiabá River, a major tributary of the Paraguay River within the Paraná-Paraguay basin. This river system supports diverse aquatic life and is ecologically significant for the Pantanal wetlands, one of the world's largest freshwater ecosystems. Proper treatment at ETE SUL CUIABA helps protect downstream water quality and biodiversity.
Environmental context
The plant discharges into the Cuiabá River, which flows into the Paraguay River and ultimately contributes to the Paraná River basin. The Cuiabá River is a key water source for the Pantanal, a vast floodplain ecosystem that supports rich biodiversity including fish, birds, and aquatic plants. Effective wastewater treatment is critical to prevent nutrient pollution and maintain the ecological health of this sensitive downstream environment.
Frequently asked questions
ETE SUL CUIABA is located in Cuiabá, the capital of Mato Grosso state in Brazil's Centro-Oeste region. Its address is Estrada Cinco, Humaitá 3, Parque Atalaia, Cuiabá.
The plant serves approximately 105,465 people, classifying it as a medium-to-large agglomeration under Brazilian sanitation standards.
The treated effluent from ETE SUL CUIABA is discharged into the Cuiabá River, which flows into the Paraguay River and eventually reaches the Paraná River basin.
The plant operates under Brazil's federal environmental standards, including CONAMA Resolution 430/2011, which sets effluent quality criteria. State-level licensing by SEMA-MT ensures compliance with discharge limits to protect the Cuiabá River.
For agglomerations of this size, secondary treatment is typically required to reduce biochemical oxygen demand (BOD) and suspended solids. Many plants also incorporate nutrient removal to protect sensitive downstream ecosystems like the Pantanal.
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