ETE Parque dos Eucaliptos - Secondary Wastewater Treatment Plant in Gravataí, Brazil

ETE Parque dos Eucaliptos is a municipal wastewater treatment plant located in the Parque dos Eucaliptos neighborhood of Gravataí, a city in the metropolitan region of Porto Alegre, Rio Grande do Sul, Brazil. The plant serves a population of approximately 2,028 residents, classifying it as a small-scale facility within the regional sanitation infrastructure. The plant provides secondary treatment, a standard biological process that removes organic matter and suspended solids. Secondary treatment is the minimum requirement under Brazilian regulations (CONAMA 430/2011) for most inland discharges. The plant's discharge volume is reported at 613.44 cubic meters, reflecting its small service population. The treated effluent is discharged into local watercourses that drain into the Guaíba River basin, which flows into the Lagoa dos Patos, one of the largest coastal lagoons in South America. This water body supports diverse aquatic life and is a critical resource for the Porto Alegre metropolitan area. The plant's operation helps protect downstream water quality in this ecologically sensitive region.

The plant discharges into tributaries of the Guaíba River, which flows into the Lagoa dos Patos, a vast coastal lagoon connected to the Atlantic Ocean. This watershed supports important fisheries and migratory bird populations. The region's subtropical climate and urban runoff from the Porto Alegre metro area make nutrient management a key concern for preventing eutrophication in the lagoon.