Balneário Oswaldo Cruz
- Location
- Oswaldo Cruz, Santa Catarina, Brazil
- Water type
- bicarbonate
- Temperature
- 36 °C
- pH
- 8
Water profile
Soothing — neither hot nor cold, perfect balance.
Loaded with major ions — the essential minerals (Ca, Mg).
Soft water — natural, classic buoyancy.
Balneário Oswaldo Cruz in Iraí, Rio Grande do Sul, is a thermal establishment built over an alkaline radioactive chlorosulfated mineral spring in the town named after Brazil's celebrated public health pioneer, set in the Alto Uruguai region of Rio Grande do Sul where the basaltic plateau of southern Brazil produces mineral-rich groundwaters with distinctive mineral profiles. The term 'radioactive' in the classical balneological context refers historically to naturally occurring trace radon or radium content, long associated in nineteenth-century thermal tradition with restful bathing cures. Iraí is Rio Grande do Sul's principal thermal resort town, drawing visitors from across the state for its multiple mineral springs with varying mineral compositions.