Guarau Drinking Water Treatment Plant. 31.5 cubic meters per second of water being treated. This is the largest Drinking Water plant in South America. This is equivalent to 720 Million Gallons per day. The Guarau Treatment Plant uses alum to coagulate and flocculate particles, which are then removed by settling and filtration.
Chlorine is added to kill any bacteria and fluoride is added for the prevention of tooth decay.
Only the Chicago Drinking Water Plant is as large as Guarau. Home Gallery B. Favelas in Sao Paulo 1. Tour through the favela with students, faculty, and led by a favela Priest. Home Gallery C. Watersheds, Rivers, Reservoirsin Sao Paulo 1. Historical, political, social, economic, and technological review of Sao Paulo and its river and reservoir systems was presented by Ana Cristina Costa from the Secretary of the Environment.