Je was op zoek naar: chalybeate (Engels - Spaans)

we breakfasted, and drank of this excellent chalybeate water.
almorzamos, y bebimos de aquella excelente agua ferruginosa.

at last after a most delightful time of reviving energy, i cried, "why, this is a chalybeate spring!"
hasta después de un minuto de goce, no exclamé: —es agua ferruginosa.

the word ‘spa’ derives from the town of spa, which is located in the province of liège, in belgium. as far back as the 14th century, people sought a cure for various ailments in the chalybeate waters of the natural springs there.
nombre spa proviene de la ciudad belga de spa en la provincia de lieja, donde numerosos centros ya en el siglo xiv a cabo tratamientos de un resort.