standpipe

From stand +‎ pipe.

standpipe (plural standpipes)

1. A vertical pipe into which water is pumped so that a desired pressure is available at the bottom.
   1. (by extension) A vertical pipe used as an overflow protection drain in certain domestic plumbing fixtures (e.g. flush toilets).
3. The plumbing for a water supply in a building for the use of firefighters; the water supply itself (firewater).
5. A freestanding pipe fitted with a tap which is installed outdoors to dispense water for everyday use.