It's not really a euphemism - it's a metaphor, and means deciding to cry in order to manipulate others. It is used only when referring to women's behaviour. A (stereotypically pretty) woman who is caught speeding might try to avoid a fine by 'turning on the waterworks' to evoke the sympathy of the police patrolman.
The Waterworks was created in 1994.
Brede Waterworks was created in 1904.
Lockesburg Waterworks was created in 1936.
Brooklyn Waterworks was created in 1891.
Decatur Waterworks was created in 1906.
Unadilla Waterworks was created in 1891.
Waterworks is a very fun water park in the state of Virginia.
A discharge pipe with a valve and spout at which water may be drawn from the mains of waterworks; a water plug.
Ottawa Waterworks Building was created in 1904.
Chelsea Waterworks Company ended in 1902.
Chelsea Waterworks Company was created in 1723.
Montevideo Waterworks Company ended in 1948.