ETE TATU Wastewater Treatment Plant, Limeira, São Paulo, Brazil

ETE TATU is a wastewater treatment plant located in Limeira, within the state of São Paulo, Brazil. The facility serves a population of around 220,000, placing it in the large agglomeration category. Its location in the interior of São Paulo state places it within a region of significant industrial and agricultural activity. As a large-scale plant in Brazil, ETE TATU is subject to CONAMA Resolution 430/2011 and state-level environmental regulations, which set discharge standards for organic matter, nutrients, and pathogens. Plants of this size typically employ secondary or advanced treatment to meet regulatory requirements. The population served indicates substantial treatment capacity. The plant discharges treated effluent into local water bodies that ultimately drain into the Piracicaba River basin, a tributary of the Tietê River. The Tietê River flows through São Paulo state and eventually reaches the Paraná River basin, which is a major hydrological system in South America. Proper treatment at ETE TATU is critical for protecting downstream water quality and aquatic ecosystems.

The treated effluent from ETE TATU enters the Piracicaba River basin, which flows into the Tietê River and eventually the Paraná River system. This watershed supports diverse aquatic life and is used for water supply, irrigation, and recreation. The region's subtropical climate and agricultural land use make nutrient removal important to prevent eutrophication in downstream reservoirs.