ETE Mariápolis - Secondary Wastewater Treatment Plant in Mariápolis, São Paulo

ETE Mariápolis is a municipal wastewater treatment facility located in Mariápolis, a city in the state of São Paulo, Brazil. The plant serves a population of approximately 3,043 residents, reflecting its role in managing domestic wastewater for a small community in the southeastern region of the country. The plant operates with secondary treatment, which is the standard biological process for removing organic matter and suspended solids. Under Brazil's national environmental regulations (CONAMA resolutions), secondary treatment is typically required for urban wastewater to meet discharge standards. The plant's daily discharge volume of 407.50 cubic meters indicates its operational scale. The treated effluent is discharged into local water bodies that eventually drain into the Paraná River basin, one of South America's major river systems. This basin supports diverse aquatic ecosystems and provides water for agriculture and human consumption downstream. Proper treatment at ETE Mariápolis helps protect water quality in this ecologically significant watershed.

The plant's discharge enters local streams that flow into the Paraná River basin, a vast system that drains into the Río de la Plata estuary. This watershed supports rich biodiversity, including migratory fish species and riparian forests. Effective wastewater treatment is crucial to prevent nutrient loading and maintain water quality in this ecologically sensitive region.