Map - Águas de São Pedro (Águas de São Pedro)

Águas de São Pedro is a Brazilian municipality in the state of São Paulo located 184 km from the state capital. At only 3.61 km2, it is the second-smallest Brazilian municipality in terms of area, and had an estimated population of 3,521. 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).

The average annual temperature in the city is 22.4 C, and most of the municipality's vegetation consists of reforested area. In 2016 there were 2,491 vehicles in the city. Exclusively an urban area, with no rural areas, the city had four health facilities in 2009. Its Human Development Index (HDI) is 0.854, the second highest in the state of São Paulo, as well as the second highest in Brazil, surpassed only by São Caetano do Sul.

Águas de São Pedro was incorporated in the 1940s. The city is known for its mineral waters of medicinal value, their natural sources popular tourist attractions. One of the springs, Fonte Juventude, has the second most highly sulfurous water in the world. It also has two large parks, Dr.Octavio Moura Andrade Park and the Parque das Águas "José Benedito Zani", and the municipal mini-garden, all important green areas of the city.

The municipality is located in the region of Itaqueri Ridge – Serra do Itaqueri; Itaqueri means "lying stone" in Tupí–Guaraní – in the south-central part of the state of São Paulo. It is a planned city and since its founding has been a tourist destination.