From Wikipedia on Chinese Water Torture:

> Despite the name, it is not a Chinese invention and it is not traditional anywhere in Asia. Its earliest known version was first documented by Hippolytus de Marsiliis in Bologna (now in Italy) in the late 15th or early 16th century, and it was widely used in Western countries before being popularized by Harry Houdini in the early 20th century.

It turns out that there are lots of different water tortures (https://en.wikipedia.org/wiki/Water_torture) but the "Chinese" one was first documented in Italy: https://en.wikipedia.org/wiki/Chinese_water_torture

However, I don't recommend reading those articles beyond the first paragraph and list of contents!

Americans go big. They use plenty more water during enhanced interrogation.