ETE Marmeleiro - Secondary Wastewater Treatment Plant in Marmeleiro, Paraná

ETE Marmeleiro is a municipal wastewater treatment plant located in Marmeleiro, a city in the state of Paraná, Brazil. The plant serves a population of approximately 3,488 residents, reflecting its role in managing domestic wastewater for a small community in the southern region of the country. The plant provides secondary treatment, which is the standard level required for urban wastewater in Brazil under national regulations. For small agglomerations like Marmeleiro, secondary treatment effectively reduces organic matter and suspended solids before discharge. The treated effluent is discharged into local waterways that ultimately 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 Marmeleiro helps protect water quality in the region's streams and rivers.

The plant discharges into small streams that flow into the Iguaçu River, a major tributary of the Paraná River basin. The Paraná River system supports extensive biodiversity, including migratory fish species and riparian forests. Downstream, the river flows through agricultural and urban areas before reaching the Río de la Plata estuary. Effective wastewater treatment is crucial to prevent nutrient loading and maintain ecological balance in this sensitive watershed.