Overview
ETE Porto das Pedras is a secondary treatment plant serving 2,640 people in Várzea Grande, Mato Grosso, Brazil. It discharges 240.96 m³/day of treated wastewater into the local watershed.
ETE Porto das Pedras is a municipal wastewater treatment plant located in the Petrópolis neighborhood of Várzea Grande, Mato Grosso, Brazil. It serves a population of approximately 2,640 residents, classifying it as a small-scale facility within the metropolitan region of Cuiabá. The plant provides secondary treatment, which is the standard biological treatment level required for urban wastewater in Brazil under federal regulations (CONAMA resolutions). For a plant of this size, secondary treatment ensures significant reduction of organic matter and suspended solids before discharge. The plant handles a daily flow of about 240.96 m³. Treated effluent from the plant is discharged into local waterways 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 and a critical ecosystem for biodiversity. Proper treatment helps protect downstream water quality and aquatic habitats.
Environmental context
The plant's discharge enters the Cuiabá River watershed, which flows into the Paraguay River and eventually feeds the Pantanal wetlands. The Pantanal is an ecologically sensitive region that supports diverse aquatic life, migratory birds, and endangered species. Secondary treatment reduces nutrient and organic loads, helping to prevent eutrophication and maintain the ecological balance of this globally important freshwater system.
Frequently asked questions
ETE Porto das Pedras is located in the Petrópolis neighborhood of Várzea Grande, in the state of Mato Grosso, Brazil. It is part of the Cuiabá metropolitan region.
The plant serves approximately 2,640 residents, making it a small-scale municipal wastewater treatment facility.
The plant discharges treated effluent into local waterways that flow into the Cuiabá River, which is part of the Paraguay River basin. The discharge volume is about 240.96 cubic meters per day.
The plant provides secondary treatment, which is the standard biological treatment required for urban wastewater in Brazil. This process significantly reduces organic matter and suspended solids.
Brazil's wastewater treatment is regulated by CONAMA resolutions and state environmental agencies. For small plants like this, secondary treatment is typically mandated to protect water quality in receiving water bodies, especially those feeding sensitive ecosystems like the Pantanal.
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