Águas de São Pedro
Águas de São Pedro () is a Brazilian municipality in the state of São Paulo located from the state capital. At only , it is the second-smallest Brazilian municipality in terms of area, and had a population of 2,707 in 2010. Águas de São Pedro means "Waters of Saint Peter". Its name is derived from the mineral springs in its territory and their location, which before the city's founding were part of the municipality of São Pedro (Saint Peter).
Águas de São Pedro
For four years, the Institute for Technological Research (IPT) of the University of São Paulo conducted a series of studies of those waters. Generally, water from great depths has a high concentration of substances that may be harmful to human beings, and its pH may not be suitable for bathing. In 1940 the results were published in Bulletin 26 of the IPT. The waters were deemed good for bathing, and their medicinal properties were studied by Professor João de Aguiar Pupo, Dean of the Faculty of Medicine of São Paulo.