When drinking fountains were first created they used to shoot "water one inch straight into the air, creating a bubbling texture, and the excess water" used to run "back down over the sides of the nozzle" (wikipedia) This was definitely an easy way to convey deseases. However, after a while, the production of drinking fountains started adopting an arc projection, which made it easier for the person to drink and made it more sanitary. Nowdays the jet of water goes as far as four inches in order to avoid infections and bacterial transmission.
642 views
Usually answered in minutes!
×