What is a Ferruginous Spring?
A ferruginous spring contains iron (II) and iron (III) ions totaling 20 mg per kilogram of spring water. Clear when it gushes from the source, it turns reddish-brown to golden when oxidized by air.
It has a distinctive metallic, rust-like aroma and a slightly bitter, astringent taste. The reddish-brown staining visible on the bathtub rim is an unmistakable visual signature.
Indications for Drinking
- Iron-deficiency anemia
How to Bathe in a Ferruginous Spring
- Fresh spring water is ideal — once heavily oxidized, the iron is less bioavailable.
- Avoid white towels and light-colored swimwear; iron staining is difficult to remove.
- A quick rinse with fresh water after bathing reduces the metallic smell (slightly reduces skin benefits).
References
Related Articles


