Overview
ETE ZACARIAS is a secondary-level wastewater treatment plant serving Zacarias, São Paulo, Brazil. It treats wastewater from approximately 1,769 residents and discharges 293.53 cubic meters per day.
ETE ZACARIAS is a wastewater treatment plant located in Zacarias, a municipality in the state of São Paulo, Brazil. The plant serves a population of approximately 1,769 people, placing it in the small-agglomeration category under Brazilian wastewater management frameworks. It is situated in the interior of São Paulo state, within the Rio Preto region, and operates as part of the municipal sanitation infrastructure. The plant provides secondary treatment, which is the standard level required for urban wastewater in Brazil under CONAMA Resolution 430/2011 and other national regulations. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids. As a coastal-proximate facility (within 10 km of the coast), the plant's discharge may ultimately reach the Atlantic Ocean via local drainage networks. The region's watershed supports diverse aquatic ecosystems, and proper treatment is essential to protect downstream water quality and ecological health. The plant's operation contributes to the sanitation goals of the São Paulo state environmental agency (CETESB).
Environmental context
The plant is located near the coast of São Paulo state, within the drainage basin that feeds into the Atlantic Ocean. The local watershed includes small rivers and streams that flow toward the coast, supporting estuarine and marine habitats. Effective secondary treatment helps reduce nutrient and organic loads, protecting downstream water quality and the ecological integrity of coastal ecosystems, which are important for fisheries and biodiversity.
Frequently asked questions
ETE ZACARIAS is located in Zacarias, a municipality in the state of São Paulo, Brazil. It serves the local community with wastewater treatment.
The plant serves approximately 1,769 people, classifying it as a small-scale wastewater treatment facility.
The plant discharges treated effluent at a rate of 293.53 cubic meters per day. Given its coastal proximity, the discharge likely enters local waterways that flow to the Atlantic Ocean.
ETE ZACARIAS provides secondary treatment, which typically involves biological processes to remove organic matter and suspended solids. This is the standard required for urban wastewater in Brazil under CONAMA regulations.
Brazil's wastewater treatment is regulated by CONAMA Resolution 430/2011 and state-level agencies like CETESB in São Paulo. Secondary treatment is mandatory for most urban discharges, and plants must comply with effluent quality standards to protect water resources.
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