The Fountains in Paris originally provided drinking water for city residents, and now are decorative features in the city's squares and parks. Paris has more than three hundred fifty fountains, the oldest dating back to the 16th century.
For the list of Paris fountains by arrondissement, See List of Paris fountains.
The history of fountains in Paris until the mid-19th century was the history of the city's struggle to provide clean drinking water to its growing population. The building of fountains also depended upon the law of gravity; until the introduction of mechanical pumps, the source of the water had to be higher than the fountain for the water to flow.
In the third century BC, the original inhabitants, the Parisii, took their water directly from the River Seine. By the first century BC, the Roman engineers of the town of Lutetia had built the aqueduct of Arcueil using gravity to provide water for their baths and for their public fountains.
In the Middle Ages, the Roman aqueduct of Arcueil had fallen into ruins and residents once again took their water from the Seine or from wells. By the reign of Philip II of France (1180–1223), two large monasteries existed outside the city walls north of Paris; the Abbey of Saint-Laurent, at the foot of Montmartre, and the Abbey of Saint-Martin-des-Champs. These monasteries received fresh water from two aqueducts; the Abbey of Saint Laurent by lead pipes coming from the heights of Romaineville and Menilmontant, and the Abbey of Saint-Martin-des-Champs by a masonry aqueduct coming from the summit of Belleville. In the first half of the 13th century, these two aqueducts were used to supply water to the first recorded fountains in medieval Paris, the Fontaine des Halles, the Fontaine des Innocents, and the Fontaine de Maubuée. These fountains did not gush water; water poured out continually in thin streams from bronze masquerons, masks, usually of animals, into stone basins so local residents could fill their vessels with water.
By 1498, when Louis XII of France became King, the water supply of Paris was controlled jointly by the merchants of the city, led by the Prévot des Marchands, and the king. They decided how water would be distributed and were responsible for building public fountains. The water supply of Paris was still very limited; by the end of the 15th century, there were only seventeen fountains providing water in Paris, including five outside the walls. All of the fountains were on the Right Bank; the two aqueducts supplied water, and, as the water table was close to the surface, and it was easy to dig wells there, while on the Left Bank the water table was deep underground and there were no working aqueducts so almost all water had to be carried from the Seine. As a result, the Left Bank had hardly grown since the time of Philip II.