wa·ter·works 
(wôtər-wûrks′, wŏtər-)
(wôtər-wûrks′, wŏtər-)pl.n.
1.
a. (used with a sing. or pl. verb) The water system, including reservoirs, tanks, buildings, pumps, and pipes, that supplies water to a city, town, or other municipality.
b. (used with a sing. verb) A single unit, such as a pumping station, within such a system.
2. (used with a sing. verb) An exhibition of moving water, such as a fountain or cascade.
3. (used with a pl. verb) Informal Tears: turned on the waterworks.