A standpipe is a vertical pipe that is connected to a water supply and stands in a street or other public place. a pipe that provides water in a public place in the street
A vertical pipe, open at the top, between a hydrant and a reservoir, to equalize the flow of water; also, a large vertical pipe, near a pumping engine, into which water is forced up, so as to give it sufficient head to rise to the required level at a distance