Maritime Provençal
L'aigo fai veni pouli.
Meaning
Water makes things grow fair.
Note : In use at Eyguières (Bouches-du-Rhône), and whose origin is found in the coat of arms of that town.
Theme
Source : La Tour-Keyrié, Recueil de proverbes provençaux (1882), Gallica — public domain. Maritime Mistralian normalisation by Lingua Nostra.