If you’ve been to Paris, you’ve walked past many of these. They’re called Wallace Fountains, in honor of the wealthy English art collector Sir Richard Wallace.
Sir Wallace donated large amounts of money to Paris in the late 1800s to fund such things as ambulances and these fountains which provide free, clean drinking water.
Sculptor Charles-Aigiste Lebourg created the cast iron fountains from Wallace’s own sketches. The four caryatids represent kindness, simplicity, charity and sobriety.
Originally, there were around 50 fountains throughout the city, and at present day, the number has more than doubled (I read 108 somewhere, but not sure if that is an exact number). In addition to this design, there are a few more as well.
Lot’s more info here if you’re interested.