ETE Castelo Wastewater Treatment Plant - Castelo, Espírito Santo, Brazil

ETE Castelo is a municipal wastewater treatment plant located in Castelo, a city in the state of Espírito Santo, Brazil. The facility serves a population of about 13,220 people, classifying it as a medium-sized agglomeration under Brazilian standards. It is situated in the southeastern region of the country, an area characterized by mountainous terrain and a tropical climate. As a plant serving a population between 10,000 and 100,000, ETE Castelo is subject to Brazil's national environmental regulations, which require adequate treatment to protect water quality. Plants of this scale typically employ secondary treatment or equivalent technologies to meet discharge standards set by the National Environment Council (CONAMA). The treated effluent from ETE Castelo is discharged into local water bodies that eventually drain into the Atlantic Ocean via the Itapemirim River basin. This region supports diverse aquatic ecosystems and is important for local agriculture and water supply. Proper wastewater treatment at this facility helps safeguard downstream water quality and ecological health.

ETE Castelo discharges into the Itapemirim River basin, which flows eastward to the Atlantic Ocean near the coast of Espírito Santo. The receiving waters support diverse aquatic life and are used for irrigation and recreation. The plant's operation helps reduce nutrient and pathogen loads, protecting downstream ecosystems and maintaining water quality for communities along the river.