Renibus et stomacho, spleni corique medeturMille malis prodest ista salubris aqua.This healthy water is medicine for the kidneys, the stomach, the spleen and the heartand is useful for a thousand diseases.The Fontana dell'Acqua Acetosa is a fountain in Rome (Italy), located in the flat area with the same name, in the quarter Parioli; at this point the river Tiber forms a deep bend before heading north again.

In 1613 Pope Paul V had it analyzed, and it turned out that it was not only drinkable, but also curative for diseases of the kidneys, stomach, spleen and liver, to the point that someone collected it in bottles to sell it in the city.

The stone seats were installed in 1821, thanks to a funding from Ludwig I of Bavaria, a frequent visitor to the area during his Roman stay (it was here that he met his lover Maria Anna Florenzi).

Still at the beginning of the 20th century, the street vendors called acquacetosari sold the water from this source around the city; the first mention on this particular profession is reported by Papi in the De agricoltura (1663).

Between 2008 and 2009 the fountain has been subjected to an important renovation work, which also included the creation of a small fenced park, with the aim of restoring to the area its original setting.