I don’t know if you had already this informations, but in all Paris (France), in a street you can find public fountain with really good water for free. They is a map on a french website with a map of all the fountain, and they history and about the water. They is now three sparkling water too in Paris. The water is really good. This is the adress of the map:
https://www.eaudeparis.fr/carte-des-fontaines/









