Carabaña purgative water Food and drink · Carabaña, Las Vegas, Madrid Image of Carabaña, not of the place itself. A spring of sodium sulphate waters declared mineral-medicinal in 1883, whose bottling as purgative water came to be sold across half of Europe. In 1928 they were declared of public utility and they remain tied to the village's identity. Photo: M.Peinado from Alcalá de Henares, España (CC BY 2.0) What to see and do in Carabaña