From Where Did Water Fountains Originate?
From Where Did Water Fountains Originate? Hundreds of ancient Greek texts were translated into Latin under the authority of the scholarly Pope Nicholas V, who ruled the Roman Catholic Church from 1397 to 1455. He undertook the embellishment of Rome to turn it into the model seat of the Christian world. Restoration of the Acqua Vergine, a desolate Roman aqueduct which had transported fresh drinking water into the city from eight miles away, began in 1453 at the behest of the Pope.
The One Cleaning Solution to NEVER Use On Your Wall Water Fountains

Experts suggest that the typical garden fountain undergoes a thorough cleaning every 3-4 months. First you must drain the water. Then use a soft cloth and mild cleanser to scrub the inside. If there is delicate artwork, you might need to use a toothbrush for those hard-to-reach areas. Be sure to completely rinse the inside of the fountain to make sure all the soap is gone.
It is highly suggested taking the pump apart to better clean the inside and remove any plankton or calcium. Letting it soak in vinegar for a few hours first will make it much easier to clean. Build-up can be a big hassle, so use mineral or rain water over tap water, when possible, to eliminate this dilemma.
Finally, be sure to have a quick look at your fountain every day and add water if you see that the level is too low. Low water levels can ruin the pump - and you do not want that!