The well originates about 500 m above the Rothenbrunnen Inn right on the banks of the Matonabach, a little brook. It is here that a shepherd supposedly plunged his injured foot into the water and was healed.
The analysis of the water that was carried out in 1960 is, however, more prosaic: It is first-class mineral water (calcium-magnesium-sulphate water) which is highly suitable for curative water therapies involving bathing and drinking. In addition, the water has healing qualities in cases of rheumatic illnesses, chronic liver damage and less serious cases of diabetes as well as gall formation inside the liver.
The iron precipitations, which leave a red-brown covering at the source of the well, gave Bad Rothenbrunnen its name.