Rich in active gases or metals — a strong mineral character.
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
FerBicarbonatesManganèse
Ban Khru Nam Phu Ron Nam Rae is a ferruginous mineral spring community in Thailand, identified by a name that references both hot spring water (nam phu ron) and the slow seeping or dripping character of its iron-rich groundwater emergence (nam rae), suggesting a spring that rises quietly from the earth in a gentle, persistent flow rather than a vigorous bubbling eruption. The ferruginous mineral waters carry dissolved iron compounds that give the spring its distinctive character, valued in the Thai thermal tradition. The community maintains the traditional Thai practice of using naturally occurring ferruginous mineral water as an accessible resource embedded in the everyday landscape of the surrounding village.
Insider tip — The name Nam Phu Ron Nam Rae translates roughly to 'hot iron-mineral spring' in Thai, and the 40°C waters here live up to that billing with a rich ferrous mineral profile. Located in Chaiyaphum province in north-central Thailand, this spring is set against the plateau's rolling terrain. The iron content produces a characteristic slightly rusty hue in pooled areas around the vent. Locals have long used these waters for treating skin ailments and fatigue.