Chemical Analysis
An analysis of the water was commissioned by Mayor Anselme Lacadé of Lourdes in 1858. It was conducted by a professor in Toulouse, who determined that the water was potable and that it contained the following: oxygen, nitrogen, carbonic acid, carbonates of lime and magnesia, a trace of carbonate of iron, an alkaline carbonate or silicate, chlorides of potassium and sodium, traces of sulphates of potassium and soda, traces of ammonia, and traces of iodine. Essentially, the water is quite pure and inert. Lacadé had hoped that Lourdes water might have special mineral properties which would allow him to develop Lourdes into a spa town, to compete with neighbouring Cauterets and Bagnères-de-Bigorre.
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