1. 
[syn: water system, water supply, water]
The Collaborative International Dictionary of English v.0.48:
Water supply \Wa"ter sup*ply"\
   A supply of water; specifically, water collected, as in
   reservoirs, and conveyed, as by pipes, for use in a city,
   mill, or the like.
   [1913 Webster]
WordNet (r) 3.0 (2006):
water supply
    n 1: a facility that provides a source of water; "the town
         debated the purification of the water supply"; "first you
         have to cut off the water" [syn: water system, water
         supply, water]